Experimental fix for an hang when stopping devices.

Public issue https://github.com/mackron/miniaudio/issues/355

miniaudio.h

@@ -12673,6 +12673,11 @@ static ma_result ma_device_audio_thread__default_read_write(ma_device* pDevice)
                         }
                     }
 
+                    /* Make sure we don't get stuck in the inner loop. */
+                    if (capturedDeviceFramesProcessed == 0) {
+                        break;
+                    }
+
                     totalCapturedDeviceFramesProcessed += capturedDeviceFramesProcessed;
                 }
             } break;
@@ -12696,6 +12701,11 @@ static ma_result ma_device_audio_thread__default_read_write(ma_device* pDevice)
                         break;
                     }
 
+                    /* Make sure we don't get stuck in the inner loop. */
+                    if (framesProcessed == 0) {
+                        break;
+                    }
+
                     ma_device__send_frames_to_client(pDevice, framesProcessed, capturedDeviceData);
 
                     framesReadThisPeriod += framesProcessed;
@@ -12723,6 +12733,11 @@ static ma_result ma_device_audio_thread__default_read_write(ma_device* pDevice)
                         break;
                     }
 
+                    /* Make sure we don't get stuck in the inner loop. */
+                    if (framesProcessed == 0) {
+                        break;
+                    }
+
                     framesWrittenThisPeriod += framesProcessed;
                 }
             } break;