Manually merge a GCC warning fix from 5.1 to 5.5:

  ------------------------------------------------------------
  revno: 3615
  revision-id: vasil.dimov@oracle.com-20100928081234-22qbm6cwht521484
  parent: vasil.dimov@oracle.com-20100928063833-snn6cjwgksa6gk3b
  committer: Vasil Dimov <vasil.dimov@oracle.com>
  branch nick: mysql-5.1-innodb
  timestamp: Tue 2010-09-28 11:12:34 +0300
  message:
    Silence a GCC warning about reaching the end of non-void func
    
    Spotted by:	Marko

storage/innobase/handler/i_s.cc

@@ -1192,8 +1192,8 @@ trx_i_s_common_fill_table(
 	deadlock occurs between the mysqld server and mysql client,
 	see http://bugs.mysql.com/29900 ; when that bug is resolved
 	we can enable the DBUG_RETURN(ret) above */
-	DBUG_RETURN(0);
 	ret++;  // silence a gcc46 warning
+	DBUG_RETURN(0);
 #endif
 }