Driver: Unbreak ArgList::hasFlag.
 - <rdar://problem/6726511> [driver] clang does not have -msoft-float
   hooked up.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68044 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/ArgList.cpp b/lib/Driver/ArgList.cpp
index 2e526ab..6d19f1a 100644
--- a/lib/Driver/ArgList.cpp
+++ b/lib/Driver/ArgList.cpp
@@ -51,7 +51,7 @@
 
 bool ArgList::hasFlag(options::ID Pos, options::ID Neg, bool Default) const {
   Arg *PosA = getLastArg(Pos);
-  Arg *NegA = getLastArg(Pos);
+  Arg *NegA = getLastArg(Neg);
   if (PosA && NegA)
     return NegA->getIndex() < PosA->getIndex();
   if (PosA) return true;