Merge existing attributes before processing pragmas in friend template
declarations.
Fixes pr13662.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162360 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaTemplate.cpp b/lib/Sema/SemaTemplate.cpp
index 4dbf3e4..98497cb 100644
--- a/lib/Sema/SemaTemplate.cpp
+++ b/lib/Sema/SemaTemplate.cpp
@@ -1104,6 +1104,9 @@
   if (Attr)
     ProcessDeclAttributeList(S, NewClass, Attr);
 
+  if (PrevClassTemplate)
+    mergeDeclAttributes(NewClass, PrevClassTemplate->getTemplatedDecl());
+
   AddPushedVisibilityAttribute(NewClass);
 
   if (TUK != TUK_Friend)
@@ -1138,8 +1141,6 @@
     NewTemplate->setInvalidDecl();
     NewClass->setInvalidDecl();
   }
-  if (PrevClassTemplate)
-    mergeDeclAttributes(NewClass, PrevClassTemplate->getTemplatedDecl());
 
   ActOnDocumentableDecl(NewTemplate);