GR_PROXY_MOVE: Work around Win/Clang eval order bug

BUG=chromium:687259

Change-Id: I145dac240a3c4f89cf1b6bf6ff54ba73cd110ebf
Reviewed-on: https://skia-review.googlesource.com/7831
Reviewed-by: Hans Wennborg <hwennborg@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
1 file changed