Do not call processDrmInfo if acquireDrmInfo returns null
Do not call processDrmInfo if acquireDrmInfo returns null

Change-Id: Ib762d429daaa8cb2310951cc54f26d75aacaf673

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base