qcacmn: Check null in qdf_nbuf_track_free

Freeing a null pointer shouldn't do anything.
Some code relies on this.  Specifically, in a
rare scenario, an allocation is made outside of
a spinlock and may freed without being used or
verified inside the spinlock.

Change-Id: Ib5f8ecabc62454a0ca9b6723cd80ff2f701196c3
CRs-Fixed: 1024277
1 file changed
tree: cb803cf53c3cbc2b50e5f5b612eaef3a69a4249b
  1. dp/
  2. hif/
  3. htc/
  4. qdf/
  5. wmi/
  6. README.txt
  7. VERSION.txt