Fix gcc warnings and remove debug

plugins/samplesource/airspyhf/airspyhfinput.cpp

@@ -292,11 +292,12 @@ int AirspyHFInput::getSampleRate() const
 
 uint32_t AirspyHFInput::getSampleRateFromIndex(quint32 devSampleRateIndex) const
 {
+    int index;
     if (devSampleRateIndex >= m_sampleRates.size()) {
-        devSampleRateIndex = m_sampleRates.size() - 1;
+        index = m_sampleRates.size() - 1;
     }
-    if (devSampleRateIndex >= 0) {
-        return m_sampleRates[devSampleRateIndex];
+    if (index >= 0) {
+        return m_sampleRates[index];
     } else {
         return 0;
     }

plugins/samplesource/rtlsdr/rtlsdrthread.cpp

@@ -115,10 +115,8 @@ void RTLSDRThread::callbackIQ(const quint8* inBuf, qint32 len)
 		// Choose between live data or replayed data
 		if (replayEnabled && m_replayBuffer->useReplay()) {
 			len = m_replayBuffer->read(remaining, buf);
-			qDebug() << "Replay";
 		} else {
 			len = remaining;
-			qDebug() << "Live" << m_replayBuffer->useReplay();
 		}
 		remaining -= len;