Fix an inconsistency in Sema::ConvertArgumentsForCall in that
the callee note diagnostic was not emitted in the case where
there were too few arguments.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@136437 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Sema/exprs.c b/test/Sema/exprs.c
index 9ce1481..460f72c 100644
--- a/test/Sema/exprs.c
+++ b/test/Sema/exprs.c
@@ -163,7 +163,7 @@
 }
 
 // PR6501
-void test18_a(int a); // expected-note {{'test18_a' declared here}}
+void test18_a(int a); // expected-note 2 {{'test18_a' declared here}}
 void test18(int b) {
   test18_a(b, b); // expected-error {{too many arguments to function call, expected 1, have 2}}
   test18_a(); // expected-error {{too few arguments to function call, expected 1, have 0}}