Fixed double free errors in M17 code, see #73

openrtx/src/core/audio_codec.c

@@ -123,6 +123,8 @@ bool codec_startDecode(const enum AudioSink destination)
 
 void codec_stop()
 {
+    if(running == false) return;
+
     running = false;
     pthread_join(codecThread, NULL);
 }

openrtx/src/protocols/M17/M17Demodulator.cpp

@@ -44,7 +44,8 @@ M17Demodulator::M17Demodulator()
 
 M17Demodulator::~M17Demodulator()
 {
-    terminate();
+    // TODO
+    // terminate();
 }
 
 void M17Demodulator::init()

openrtx/src/protocols/M17/M17Modulator.cpp

@@ -39,7 +39,8 @@ M17Modulator::M17Modulator()
 
 M17Modulator::~M17Modulator()
 {
-    terminate();
+    // TODO
+    // terminate();
 }
 
 void M17Modulator::init()