Small change (dereferencing pointer instead of double pointer) to avoid snmpget (+walk) to collapse

3 jobs from kostis_snmpget_bug in 4 minutes and 15 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Compile
passed #14825
ohwrsw
make_all

03:04

passed #14826
ohwrsw
make_rt_cpu

00:19

passed #14824
ohwrsw
make_wrpc_sw

00:51