crowddetector: Initialize variables properly
crowddetector: Initialize variables properly

Change-Id: Ia4957798e13d3c46be7f698b262c7a9f32fbeb4d

dfernandezlop/kms-crowddetector,shelsonjava/kms-crowddetector,shelsonjava/kms-crowddetector,Kurento/kms-crowddetector,dfernandezlop/kms-crowddetector,Kurento/kms-crowddetector,Kurento/kms-crowddetector,shelsonjava/kms-crowddetector,dfernandezlop/kms-crowddetector