Currently callers are calling the wlan_mlme_get_sap_max_peers() API
to get the max number of peers without initializing the output
parameter.
In case of failure in wlan_mlme_get_sap_max_peers() API,
sap_max_num_peers can have uninitialized value which can lead to
undefined behavior.
To fix this issue, initialize the output parameter before calling
wlan_mlme_get_sap_max_peers()
CRs-Fixed: 3337315
Change-Id: I83ecaf80ccee7d92a66fe561c0a1a7bd409fd64c
6b6b2f4fde