Fix comment.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172831 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Format/UnwrappedLineParser.h b/lib/Format/UnwrappedLineParser.h
index fb18128..7a999e7 100644
--- a/lib/Format/UnwrappedLineParser.h
+++ b/lib/Format/UnwrappedLineParser.h
@@ -159,8 +159,7 @@
   FormatToken FormatTok;
   bool MustBreakBeforeNextToken;
 
-  // The parsed lines. This is a pointer so we can switch it out to parse an
-  // unrelated set of unwrapped lines and put them into place later.
+  // The parsed lines. Only added to through \c CurrentLines.
   std::vector<UnwrappedLine> Lines;
 
   // Preprocessor directives are parsed out-of-order from other unwrapped lines.