Tighten up blocks type checking.  This was discussed back in the
r56595 timeframe, but left undone.  Radar 6812711


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69745 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaExpr.cpp b/lib/Sema/SemaExpr.cpp
index fa85757..81bac66 100644
--- a/lib/Sema/SemaExpr.cpp
+++ b/lib/Sema/SemaExpr.cpp
@@ -4894,7 +4894,7 @@
     DiagKind = diag::err_int_to_block_pointer;
     break;
   case IncompatibleBlockPointer:
-    DiagKind = diag::ext_typecheck_convert_incompatible_block_pointer;
+    DiagKind = diag::err_typecheck_convert_incompatible_block_pointer;
     break;
   case IncompatibleObjCQualifiedId:
     // FIXME: Diagnose the problem in ObjCQualifiedIdTypesAreCompatible, since