Produce an error if a -cc1 only option is passed to the driver.

llvm-svn: 191380
diff --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp
index 1cbb623..0125e89 100644
--- a/clang/lib/Driver/Driver.cpp
+++ b/clang/lib/Driver/Driver.cpp
@@ -2014,7 +2014,7 @@
 
 std::pair<unsigned, unsigned> Driver::getIncludeExcludeOptionFlagMasks() const {
   unsigned IncludedFlagsBitmask = 0;
-  unsigned ExcludedFlagsBitmask = 0;
+  unsigned ExcludedFlagsBitmask = options::NoDriverOption;
 
   if (Mode == CLMode) {
     // Include CL and Core options.