wlan: Resolve invalid memory access while posting SYS_MSG_ID_MC_THR_PROBE

While posting SYS_MSG_ID_MC_THR_PROBE event, initialize callback variable
to NULL, to resolve accessing invalid memory. when MC thread process the
same request.

Change-Id: I8fc06f4b462a73eb584054f2ba2081824bc46520
CRs-Fixed: 936769
1 file changed
tree: 1be5ae65a266deb0ce2d20c6952a69258c3d1b7a
  1. CORE/
  2. firmware_bin/
  3. riva/
  4. Android.mk
  5. Kbuild
  6. Kconfig
  7. Makefile