Add missing clean-up of idmap file descriptors.
Add missing clean-up of idmap file descriptors.

Change-Id: I9bdc9a4b7962f1a8dce77f4b213c8b9dc26e4b0f

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