kmssdpsdesext: Fix index_of macro
kmssdpsdesext: Fix index_of macro

Change-Id: I72377cf43f7f46f35134537bf3f1f07ad599bcb0

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