For friend class decls, always use TK_Reference so we'll try to look up existing class decls first.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71481 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Parse/ParseDeclCXX.cpp b/lib/Parse/ParseDeclCXX.cpp
index f684649..e1e81ec 100644
--- a/lib/Parse/ParseDeclCXX.cpp
+++ b/lib/Parse/ParseDeclCXX.cpp
@@ -455,7 +455,7 @@
   Action::TagKind TK;
   if (Tok.is(tok::l_brace) || (getLang().CPlusPlus && Tok.is(tok::colon)))
     TK = Action::TK_Definition;
-  else if (Tok.is(tok::semi))
+  else if (Tok.is(tok::semi) && !DS.isFriendSpecified())
     TK = Action::TK_Declaration;
   else
     TK = Action::TK_Reference;