From f012e15c953f7d6a24f9d063123b41739060782f Mon Sep 17 00:00:00 2001
From: pasky <pasky@openttd.org>
Date: Mon, 22 Nov 2004 22:51:19 +0000
Subject: [PATCH] (svn r771) Do not give a file new {struct GRFFile} if it was
 already loaded once. Eliminates those double entries in the newgrf manager
 and also some possible memory leaks.

---
 newgrf.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/newgrf.c b/newgrf.c
index 3ce32bae7c..52ca90575d 100644
--- a/newgrf.c
+++ b/newgrf.c
@@ -1989,6 +1989,14 @@ void InitNewGRFFile(const char *filename, int sprite_offset)
 {
 	struct GRFFile *newfile;
 
+	newfile = GetFileByFilename(filename);
+	if (newfile) {
+		/* We already loaded it once. */
+		newfile->sprite_offset = sprite_offset;
+		_cur_grffile = newfile;
+		return;
+	}
+
 	newfile = calloc(1, sizeof(struct GRFFile));
 
 	if (newfile == NULL)