Fix unused variable warning in -Asserts mode.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67073 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 1 insertions, 0 deletions

diff --git a/lib/Driver/Driver.cpp b/lib/Driver/Driver.cpp
index e02c283b7c..980512285d 100644
--- a/lib/Driver/Driver.cpp
+++ b/lib/Driver/Driver.cpp
@@ -79,6 +79,7 @@ ArgList *Driver::ParseArgStrings(const char **ArgBegin, const char **ArgEnd) {
     }
 
     assert(Index > Prev && "Parser failed to consume argument.");
+    (void) Prev;
   }
 
   return Args;