Remove Sema.h's dependency on DeclCXX.h.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112032 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaDeclAttr.cpp b/lib/Sema/SemaDeclAttr.cpp
index dcee0b3..f515e68 100644
--- a/lib/Sema/SemaDeclAttr.cpp
+++ b/lib/Sema/SemaDeclAttr.cpp
@@ -14,6 +14,7 @@
 #include "clang/Sema/Sema.h"
 #include "TargetAttributesSema.h"
 #include "clang/AST/ASTContext.h"
+#include "clang/AST/DeclCXX.h"
 #include "clang/AST/DeclObjC.h"
 #include "clang/AST/Expr.h"
 #include "clang/Basic/TargetInfo.h"