(svn r20758) -Fix: when leaving the program, current newgrf config would leak, causing valgrind warnings

src/newgrf.cpp

@@ -6984,7 +6984,7 @@ static void ResetNewGRFErrors()
  * Reset all NewGRF loaded data
  * TODO
  */
-static void ResetNewGRFData()
+void ResetNewGRFData()
 {
 	CleanUpStrings();
 	CleanUpGRFTownNames();

src/newgrf.h

@@ -159,6 +159,7 @@ extern GRFLoadedFeatures _loaded_newgrf_features;
 void LoadNewGRFFile(struct GRFConfig *config, uint file_index, GrfLoadingStage stage);
 void LoadNewGRF(uint load_index, uint file_index);
 void ReloadNewGRFData(); // in saveload/afterload.cpp
+void ResetNewGRFData();
 
 void CDECL grfmsg(int severity, const char *str, ...) WARN_FORMAT(2, 3);
 

src/openttd.cpp

@@ -59,6 +59,7 @@
 #include "rail_gui.h"
 #include "core/backup_type.hpp"
 #include "hotkeys.h"
+#include "newgrf.h"
 
 
 #include "town.h"
@@ -347,6 +348,8 @@ static void ShutdownGame()
 	free(_config_file);
 #endif
 
+	ResetNewGRFData();
+
 	/* Close all and any open filehandles */
 	FioCloseAll();
 }