Free p_pending_data from tBNEP_CONN to avoid potential memory leaks

Bug: 63146105
Test: External script
Change-Id: I1281779ccf38d1d2dfb1a6dc0e45c0e533cabbca
Merged-In: I1281779ccf38d1d2dfb1a6dc0e45c0e533cabbca
(cherry picked from commit 4982eb5df30cbcbee5c8b8807be95fdc6dfa63c5)
(cherry picked from commit a654681c5558904a8abfa1bbab8eafb651c13231)
(cherry picked from commit 64a12d3b6e71d9161837f28ce18c34d924c2bafc)
(cherry picked from commit 8f18afd26c02ae3d46bf14d6e36017965dee0394)
2 files changed