GL context init fixes and warning cleanup

src/demod/DemodulatorInstance.cpp

@@ -292,7 +292,6 @@ void DemodulatorInstance::setFrequency(long long freq) {
         command.llong_value = freq;
         threadQueueCommand->push(command);
     }
-    demodulatorPreThread->getParams().bandwidth;
 }
 
 long long DemodulatorInstance::getFrequency() {

src/demod/DemodulatorPreThread.cpp

@@ -100,6 +100,8 @@ void DemodulatorPreThread::threadMain() {
                 case DemodulatorThreadCommand::DEMOD_THREAD_CMD_SET_FREQUENCY:
                     params.frequency = command.llong_value;
                     break;
+                default:
+                    break;
                 }
             }
         }
@@ -227,6 +229,8 @@ void DemodulatorPreThread::threadMain() {
                     params.bandwidth = result.bandwidth;
                     params.sampleRate = result.sampleRate;
 
+                    break;
+                default:
                     break;
                 }
             }
@@ -243,6 +247,10 @@ void DemodulatorPreThread::threadMain() {
     tCmd.context = this;
     threadQueueNotify->push(tCmd);
     std::cout << "Demodulator preprocessor thread done." << std::endl;
+
+#ifdef __APPLE__
+    return this;
+#endif
 }
 
 void DemodulatorPreThread::terminate() {

src/demod/DemodulatorThread.cpp

@@ -410,6 +410,10 @@ void DemodulatorThread::threadMain() {
     tCmd.context = this;
     threadQueueNotify->push(tCmd);
     std::cout << "Demodulator thread done." << std::endl;
+
+#ifdef __APPLE__
+    return this;
+#endif
 }
 
 void DemodulatorThread::setVisualOutputQueue(DemodulatorThreadOutputQueue *tQueue) {

src/demod/DemodulatorWorkerThread.cpp

@@ -27,6 +27,8 @@ void DemodulatorWorkerThread::threadMain() {
                 filterChanged = true;
                 filterCommand = command;
                 break;
+            default:
+                break;
             }
             done = commandQueue->empty();
         }