qca-wifi: CFR: Fix NULL check before invoking DBR unregister handler

In HKV2/Cypress, check if DBR unregister handler is non-null before
invoking the same.

Change-Id: If22eac6e0005b9aa8887888b8070c884ec52d40f
2 files changed
tree: 522a6e1d979babd55f3579bfd1377662939f32b3
  1. configs/
  2. crypto/
  3. direct_attach/
  4. dp/
  5. qal/
  6. target_if/
  7. tools/
  8. umac/
  9. wmi/