🚨 memory leak 🚨 memory leak 🚨

bta_dm_search_cb.cancel_pending is only false

p_msg is only deallocated if it is sent, it is only
sent if cancel_pending is true

Bug: 159815595
Tag: #refactor
Test: compile & verify basic functions working
Change-Id: I693ed9b377c5cb9f4109ed6d93071b238bcde8cd