Silence a GCC warning about reaching the end of non-void func

Spotted by:	Marko

storage/innodb_plugin/handler/i_s.cc

@@ -1012,8 +1012,8 @@ 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
 }