Name the "return-type" DiagGroup and reference it in a few places.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70500 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Sema/return.c b/test/Sema/return.c
index b32b2e9..d96cede 100644
--- a/test/Sema/return.c
+++ b/test/Sema/return.c
@@ -7,3 +7,6 @@
   return; // expected-warning {{non-void function 't14' should return a value}}
 }
 
+void t15() {
+  return 1; // expected-warning {{void function 't15' should not return a value}}
+}