[VFS] Fix status() of opened redirected file

Make RedirectedFileSystem::openFilForRead(path)->status() the same as
RedirectedFileSystem::status(path). Previously we would just get the
status of the underlying real file, which would not have the IsVFSMapped
bit set.

This fixes rebuilding a module that has an include that is relative to
the includer where we will lookup the real path of that file before we
lookup the VFS location.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@255312 91177308-0d34-0410-b5e6-96231b3b80d8
6 files changed