Driver: Add 'q' flag for options which shouldn't be reported as unused.
 - <rdar://problem/6756295> warning about '-dynamic' argument unused
   during compilation seems incorrect


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68535 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/Option.cpp b/lib/Driver/Option.cpp
index 6248548..cad2bbf 100644
--- a/lib/Driver/Option.cpp
+++ b/lib/Driver/Option.cpp
@@ -21,7 +21,7 @@
   : Kind(_Kind), ID(_ID), Name(_Name), Group(_Group), Alias(_Alias),
     Unsupported(false), LinkerInput(false), NoOptAsInput(false),
     ForceSeparateRender(false), ForceJoinedRender(false),
-    DriverOption(false)
+    DriverOption(false), NoArgumentUnused(false)
 {
 
   // Multi-level aliases are not supported, and alias options cannot