Fix media scan NPE
Fix media scan NPE

b/7966288

Change-Id: I066bc9f00bccf070332d87d6f1bf3d6054b31136

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