Mute when performing a seek (#946)

Author: sbooth

Sources/CSFBAudioEngine/Player/AudioPlayer.mm

@@ -1248,6 +1248,9 @@ Flags clearFlags(Flags flags, std::memory_order order = std::memory_order_acq_re
 
         // Process pending seeks
         if (decoderState != nullptr && decoderState->isSeekRequested()) {
+            // Mute until the seek is complete and the ring buffer is refilled
+            setFlags(Flags::isMuted);
+
             if (NSError *seekError = nil; !decoderState->performSeek(&seekError)) {
                 decoderState->error_ = seekError;
                 decoderState->setFlags(DecoderState::Flags::cancelRequested);