[Sync::USS] Avoid behavioral changes in NigoriProce::ConnectIfReady()

This CL adjusts the error checking in
NigoriModelTypeProcessor::ConnectIfReady()
to avoid any behavioral changes after in-lining IsModelReadyOrError()

Bug: 922900
Change-Id: I5b0d1023bbf38d109e3b5394ee8a044de0add7b3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1583882
Reviewed-by: Mikel Astiz <mastiz@chromium.org>
Commit-Queue: Mohamed Amir Yosef <mamir@chromium.org>
Cr-Commit-Position: refs/heads/master@{#653998}
1 file changed