(svn r3316) - NewGRF: Unload engine names before loading grf files. This fixes names in climates where the engines don't get loaded. Renamed function to reflect its purpose.

newgrf.c

@@ -2455,6 +2455,7 @@ static void ResetNewGRFData(void)
 	// Unload sprite group data
 	UnloadWagonOverrides();
 	UnloadCustomEngineSprites();
+	UnloadCustomEngineNames();
 
 	// Reset price base data
 	ResetPriceBaseMultipliers();