Clear active requests on switching voice interactor
Clear active requests on switching voice interactor

When voice interactor goes null or changes, cancel all existing
active requests and clear them so that they can be re-submitted.

Bug: 28487567
Change-Id: Ibcf024efcc81ff18ef3babfa9a169292207bc816

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