[PATCH 4.9 38/54] ALSA: firewire-lib: fix inappropriate assignment between signed/unsigned type

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Takashi Sakamoto commit dfb00a56935186171abb5280b3407c3f910011f1 upstream. An abstraction of asynchronous transaction for transmission of MIDI messages was introduced

[PATCH 4.9 38/54] ALSA: firewire-lib: fix inappropriate assignment between signed/unsigned type

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Takashi Sakamoto commit dfb00a56935186171abb5280b3407c3f910011f1 upstream. An abstraction of asynchronous transaction for transmission of MIDI messages was introduced in Linux v4.4. Each