(svn r17988) [0.7] -Backport from trunk:

- Feature: Port OpenTTD to GNU/Hurd
- Fix: When you start giving money (input window for amount), then get moved to spectators and you click 'Ok' a crash would occur (r17953)
- Fix: Crash when closing NewGRF parameter window with no NewGRF selected [FS#3291] (r17922)
- Fix: Uninitialised values in some paths of loading TTO savegames [FS#3288] (r17908)
- Fix: Make the plane speed setting unchangeable in network games because it can be read by NewGRFs on game load and thus if it changes cause desyncs (r17902)

config.lib

@@ -1799,6 +1799,7 @@ detect_os() {
 					/cygwin/       { print "CYGWIN";  exit}
 					/mingw/        { print "MINGW";   exit}
 					/os\/2/        { print "OS2";     exit}
+					/gnu/          { print "UNIX";    exit}
 			'`
 		fi
 

src/main_gui.cpp

@@ -61,6 +61,7 @@ void HandleOnEditText(const char *str)
 	switch (_rename_what) {
 #ifdef ENABLE_NETWORK
 	case 3: { // Give money, you can only give money in excess of loan
+		if (!IsValidCompanyID(_local_company)) break;
 		const Company *c = GetCompany(_local_company);
 		Money money = min(c->money - c->current_loan, (Money)(atoi(str) / _currency->rate));
 

src/newgrf_gui.cpp

@@ -516,6 +516,7 @@ struct NewGRFWindow : public Window {
 				this->preset = -1;
 				this->SetupNewGRFWindow();
 				this->SetDirty();
+				this->DeleteChildWindows(WC_QUERY_STRING); // Remove the parameter query window
 				break;
 			}
 
@@ -558,6 +559,8 @@ struct NewGRFWindow : public Window {
 				uint i = (pt.y - this->widget[SNGRFS_FILE_LIST].top) / 14 + this->vscroll.pos;
 
 				for (c = this->list; c != NULL && i > 0; c = c->next, i--) {}
+
+				if (this->sel != c) this->DeleteChildWindows(WC_QUERY_STRING); // Remove the parameter query window
 				this->sel = c;
 
 				this->SetDirty();

src/saveload/oldloader_sl.cpp

@@ -417,12 +417,12 @@ static bool FixTTOEngines()
 				}
 			}
 
+			e->info.climates = 1;
+		}
+
 		e->preview_company_rank = 0;
 		e->preview_wait = 0;
 		e->name = NULL;
-
-			e->info.climates = 1;
-		}
 	}
 
 	return true;

src/settings.cpp

@@ -1379,7 +1379,7 @@ const SettingDesc _settings[] = {
 	SDT_CONDBOOL(GameSettings, vehicle.disable_elrails,                         38, SL_MAX_VERSION, 0,NN, false,                    STR_CONFIG_SETTING_DISABLE_ELRAILS,        SettingsDisableElrail),
 	 SDT_CONDVAR(GameSettings, vehicle.freight_trains,               SLE_UINT8, 39, SL_MAX_VERSION, 0,NN,     1,     1,     255, 1, STR_CONFIG_SETTING_FREIGHT_TRAINS,         NULL),
 	SDT_CONDBOOL(GameSettings, order.timetabling,                               67, SL_MAX_VERSION, 0, 0,  true,                    STR_CONFIG_SETTING_TIMETABLE_ALLOW,        NULL),
-	 SDT_CONDVAR(GameSettings, vehicle.plane_speed,                  SLE_UINT8, 90, SL_MAX_VERSION, 0, 0,     4,     1,       4, 0, STR_CONFIG_SETTING_PLANE_SPEED,            NULL),
+	 SDT_CONDVAR(GameSettings, vehicle.plane_speed,                  SLE_UINT8, 90, SL_MAX_VERSION, 0,NN,     4,     1,       4, 0, STR_CONFIG_SETTING_PLANE_SPEED,            NULL),
 	SDT_CONDBOOL(GameSettings, vehicle.dynamic_engines,                         95, SL_MAX_VERSION, 0,NN, false,                    STR_CONFIG_SETTING_DYNAMIC_ENGINES,        ChangeDynamicEngines),
 
 	    SDT_BOOL(GameSettings, station.join_stations,                                               0, 0,  true,                    STR_CONFIG_SETTING_JOINSTATIONS,           NULL),

src/window.cpp

@@ -509,12 +509,14 @@ void SetWindowDirty(const Window *w)
 
 /** Find the Window whose parent pointer points to this window
  * @param w parent Window to find child of
- * @return a Window pointer that is the child of w, or NULL otherwise */
-static Window *FindChildWindow(const Window *w)
+ * @param wc Window class of the window to remove; WC_INVALID if class does not matter
+ * @return a Window pointer that is the child of w, or NULL otherwise
+ */
+static Window *FindChildWindow(const Window *w, WindowClass wc)
 {
 	Window *v;
 	FOR_ALL_WINDOWS_FROM_BACK(v) {
-		if (v->parent == w) return v;
+		if ((wc == WC_INVALID || wc == v->window_class) && v->parent == w) return v;
 	}
 
 	return NULL;
@@ -522,13 +524,14 @@ static Window *FindChildWindow(const Window *w)
 
 /**
  * Delete all children a window might have in a head-recursive manner
+ * @param wc Window class of the window to remove; WC_INVALID if class does not matter
  */
-void Window::DeleteChildWindows() const
+void Window::DeleteChildWindows(WindowClass wc) const
 {
-	Window *child = FindChildWindow(this);
+	Window *child = FindChildWindow(this, wc);
 	while (child != NULL) {
 		delete child;
-		child = FindChildWindow(this);
+		child = FindChildWindow(this, wc);
 	}
 }
 

src/window_gui.h

@@ -380,7 +380,7 @@ public:
 	void DrawViewport() const;
 	void DrawSortButtonState(int widget, SortButtonState state) const;
 
-	void DeleteChildWindows() const;
+	void DeleteChildWindows(WindowClass wc = WC_INVALID) const;
 
 	void SetDirty() const;