Make one expected-diag directive match exactly one actual diagnostic.
This uncovers some bugs, so several test cases now fail.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64025 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Sema/flexible-array-init.c b/test/Sema/flexible-array-init.c
index 9ef6eb3..99ef66a 100644
--- a/test/Sema/flexible-array-init.c
+++ b/test/Sema/flexible-array-init.c
@@ -12,7 +12,7 @@
 
 struct foo { 
   int x; 
-  int y[]; // expected-note{{initialized flexible array member 'y' is here}}
+  int y[]; // expected-note 3 {{initialized flexible array member 'y' is here}}
 }; 
 struct bar { struct foo z; };