GWP-ASan: Tighten check bounds

This updates the check to ensure it does not return an out-of-bounds
address. This has no impact as this check is strictly duplicative (but
ultimately more correct) since an out-of-bounds slot should never be
returned by GetNearestSlot().

Change-Id: I5d03285fe1a5be1b8aa56237f697dd07cb92287d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1513111
Auto-Submit: Vlad Tsyrklevich <vtsyrklevich@chromium.org>
Reviewed-by: Vitaly Buka <vitalybuka@chromium.org>
Commit-Queue: Vitaly Buka <vitalybuka@chromium.org>
Cr-Commit-Position: refs/heads/master@{#639582}
1 file changed