Bluetooth: Mesh: cfg_cli: Fix trying to write a NULL pointer
Bluetooth: Mesh: cfg_cli: Fix trying to write a NULL pointer

It's not always guaranteed that param->status will be non-NULL,
especially not after a subsequent patch to fix a race condition with
the response waiting.

Signed-off-by: Johan Hedberg <628991c7b0a19c384f9b99c21ec330ce952bb838@intel.com>

Vudentz/zephyr,explora26/zephyr,nashif/zephyr,galak/zephyr,GiulianoFranchetto/zephyr,ldts/zephyr,zephyriot/zephyr,zephyriot/zephyr,punitvara/zephyr,finikorg/zephyr,Vudentz/zephyr,mbolivar/zephyr,zephyrproject-rtos/zephyr,GiulianoFranchetto/zephyr,zephyrproject-rtos/zephyr,punitvara/zephyr,Vudentz/zephyr,explora26/zephyr,mbolivar/zephyr,nashif/zephyr,finikorg/zephyr,punitvara/zephyr,zephyriot/zephyr,mbolivar/zephyr,mbolivar/zephyr,galak/zephyr,ldts/zephyr,ldts/zephyr,galak/zephyr,nashif/zephyr,kraj/zephyr,finikorg/zephyr,punitvara/zephyr,ldts/zephyr,mbolivar/zephyr,finikorg/zephyr,kraj/zephyr,explora26/zephyr,GiulianoFranchetto/zephyr,Vudentz/zephyr,punitvara/zephyr,galak/zephyr,nashif/zephyr,galak/zephyr,explora26/zephyr,Vudentz/zephyr,zephyriot/zephyr,zephyrproject-rtos/zephyr,GiulianoFranchetto/zephyr,zephyriot/zephyr,explora26/zephyr,ldts/zephyr,zephyrproject-rtos/zephyr,GiulianoFranchetto/zephyr,nashif/zephyr,Vudentz/zephyr,finikorg/zephyr,kraj/zephyr,kraj/zephyr,kraj/zephyr,zephyrproject-rtos/zephyr