CommentParser.cpp: remove unused variable.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159797 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/CommentParser.cpp b/lib/AST/CommentParser.cpp
index 701b6fa..75eae46 100644
--- a/lib/AST/CommentParser.cpp
+++ b/lib/AST/CommentParser.cpp
@@ -33,7 +33,6 @@
                                 /* IsDirection = */ true);
 
   if (Retokenizer.lexWord(Arg))
-    StringRef ArgText = Arg.getText();
     PC = S.actOnParamCommandArg(PC,
                                 Arg.getLocation(),
                                 Arg.getEndLocation(),