Revert r170500. It over-zealously converted *ALL* things named Attributes, which is wrong here.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@170721 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGDeclCXX.cpp b/lib/CodeGen/CGDeclCXX.cpp
index c7535cb..ed46178 100644
--- a/lib/CodeGen/CGDeclCXX.cpp
+++ b/lib/CodeGen/CGDeclCXX.cpp
@@ -233,7 +233,7 @@
     Fn->setDoesNotThrow();
 
   if (CGM.getLangOpts().SanitizeAddress)
-    Fn->addFnAttr(llvm::Attribute::AddressSafety);
+    Fn->addFnAttr(llvm::Attributes::AddressSafety);
 
   return Fn;
 }