parsetreebin: Avoid divide by zero exception
parsetreebin: Avoid divide by zero exception

Change-Id: Ib1433cd0b84839cb5d4794f9ca04df2ad1d24959

Kurento/kms-core,ESTOS/kms-core,Kurento/kms-core,ESTOS/kms-core,Kurento/kms-core,ESTOS/kms-core,Kurento/kms-core,ESTOS/kms-core