Make it possible for using decls to point to operators. Fixes PR4441.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74362 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Parse/MinimalAction.cpp b/lib/Parse/MinimalAction.cpp
index 9ded366..648e2da 100644
--- a/lib/Parse/MinimalAction.cpp
+++ b/lib/Parse/MinimalAction.cpp
@@ -48,6 +48,7 @@
                                               const CXXScopeSpec &SS,
                                               SourceLocation IdentLoc,
                                               IdentifierInfo *TargetName,
+                                              OverloadedOperatorKind Op,
                                               AttributeList *AttrList,
                                               bool IsTypeName) {