(svn r16338) -Codechange: split loading of references to two phases

In the first phase, indexes are stored. In the second phase, indexes are checked for validity and converted to pointers

src/saveload/subsidy_sl.cpp

@@ -39,5 +39,5 @@ void Load_SUBS()
 }
 
 extern const ChunkHandler _subsidy_chunk_handlers[] = {
-	{ 'SUBS', Save_SUBS,     Load_SUBS,     CH_ARRAY | CH_LAST},
+	{ 'SUBS', Save_SUBS, Load_SUBS, NULL, CH_ARRAY | CH_LAST},
 };