This may happen in KeyedStoreIC when the last store via setter deprecates the receiver map.

Bug: chromium:723366
Change-Id: Iff19e50c3761584401340d276ab4eead111883c3
Reviewed-on: https://chromium-review.googlesource.com/517952Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45592}