add a fixit when 'main' does ot return 'int'; review welcome

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@113324 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/FixIt/fixit.cpp b/test/FixIt/fixit.cpp
index 5a28132..9b39c9e 100644
--- a/test/FixIt/fixit.cpp
+++ b/test/FixIt/fixit.cpp
@@ -60,3 +60,9 @@
   }
 
 }
+
+CT<1> main(void); // expected-error{{'main' must return 'int'}}
+
+// typedef CT<1> mainT(void);
+// mainT main; // TODO
+