Driver: Delete the temporary files llvm::sys::Path::makeUnique
sometimes leaves around.

llvm-svn: 67253
diff --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp
index e9e7511..d1db636 100644
--- a/clang/lib/Driver/Driver.cpp
+++ b/clang/lib/Driver/Driver.cpp
@@ -898,6 +898,10 @@
     return "";
   }
 
+  // FIXME: Grumble, makeUnique sometimes leaves the file around!?
+  // PR3837.
+  P.eraseFromDisk(false, 0);
+
   P.appendSuffix(Suffix);
   return P.toString();
 }