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/tools/libclang/CIndex.cpp b/tools/libclang/CIndex.cpp
index 817de20..177b3a6 100644
--- a/tools/libclang/CIndex.cpp
+++ b/tools/libclang/CIndex.cpp
@@ -752,7 +752,7 @@
     if (FTL && VisitFunctionTypeLoc(*FTL, true))
       return true;
     
-    // FIXME: Attribute?
+    // FIXME: Attributes?
   }
   
   if (ND->doesThisDeclarationHaveABody() && !ND->isLateTemplateParsed()) {