Transceiver: Provide initial value for TransceiverState::mFiller in constructor
Transceiver: Provide initial value for TransceiverState::mFiller in constructor

Fixes: Coverity CID#211258
Change-Id: Ic00cc5939ca46407cb5bf8b6fcbcf3dc677041a2

osmocom/osmo-trx,osmocom/osmo-trx,osmocom/osmo-trx,osmocom/osmo-trx