(svn r11180) -Fix (r11175): crash on load when you don't have any NewGRFs. More interesting is: who plays without them ;)

src/newgrf_config.cpp

@@ -406,6 +406,7 @@ void ScanNewGRFFiles()
 	}
 
 	DEBUG(grf, 1, "Scan complete, found %d files", num);
+	if (num == 0 || _all_grfs == NULL) return;
 
 	/* Sort the linked list using quicksort.
 	 * For that we first have to make an array, the qsort and