Don't ask for a mode when we are not keeping the file.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185123 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/Path.cpp b/lib/Support/Path.cpp
index a631c76..1f4f44a 100644
--- a/lib/Support/Path.cpp
+++ b/lib/Support/Path.cpp
@@ -626,12 +626,12 @@
 namespace fs {
 
 error_code unique_file(const Twine &Model, SmallVectorImpl<char> &ResultPath,
-                       bool MakeAbsolute, unsigned Mode) {
+                       bool MakeAbsolute) {
   // FIXME: This is really inefficient. unique_path creates a path an tries to
   // open it. We should factor the code so that we just don't create/open the
   // file when we don't need it.
   int FD;
-  error_code Ret = unique_file(Model, FD, ResultPath, MakeAbsolute, Mode);
+  error_code Ret = unique_file(Model, FD, ResultPath, MakeAbsolute, all_read);
   if (Ret)
     return Ret;