Clean up handling of function redeclarations

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@50021 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/Sema.h b/lib/Sema/Sema.h
index 6d6a26d..e70da93 100644
--- a/lib/Sema/Sema.h
+++ b/lib/Sema/Sema.h
@@ -268,7 +268,8 @@
   TypedefDecl *ParseTypedefDecl(Scope *S, Declarator &D, QualType T,
                                 ScopedDecl *LastDecl);
   TypedefDecl *MergeTypeDefDecl(TypedefDecl *New, Decl *Old);
-  FunctionDecl *MergeFunctionDecl(FunctionDecl *New, Decl *Old);
+  FunctionDecl *MergeFunctionDecl(FunctionDecl *New, Decl *Old, 
+                                  bool &Redeclaration);
   VarDecl *MergeVarDecl(VarDecl *New, Decl *Old);
   FunctionDecl *MergeCXXFunctionDecl(FunctionDecl *New, FunctionDecl *Old);