Fix multiple OOB bugs in btm_ble_gap.cc

Bug: 275057843
Bug: 275057678
Test: manual
Tag: #security
Ignore-AOSP-First: security
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:3bb913ee8c7da4602798db754045c0fac57afecf)
Merged-In: I4c8ec50c15e2727839a49da0e582164557bcd38a
Change-Id: I4c8ec50c15e2727839a49da0e582164557bcd38a