- fix compiler warnings

src/engine/media/MT_AmrCodec.cpp

@@ -599,10 +599,10 @@ int AmrWbCodec::encode(const void* input, int inputBytes, void* output, int outp
         return 0;
 
     // Declare the data input pointer
-    const short *dataIn = (const short *)input;
+    // const short *dataIn = (const short *)input;
 
     // Declare the data output pointer
-    unsigned char *dataOut = (unsigned char *)output;
+    // unsigned char *dataOut = (unsigned char *)output;
 
     // Find how much RTP frames will be generated
     unsigned int frames = inputBytes / pcmLength();

src/engine/media/MT_AudioCodec.cpp

@@ -125,7 +125,7 @@ int G729Codec::channels()
   return 1;
 }
 
-static const int SamplesPerFrame = 80;
+// static const int SamplesPerFrame = 80;
 int G729Codec::encode(const void* input, int inputBytes, void* output, int outputCapacity)
 {
   // Create encoder if it is not done yet

src/engine/media/MT_EvsCodec.cpp

@@ -227,8 +227,7 @@ int EVSCodec::decode(const void* input, int input_length, void* output, int outp
         else
             buffer = std::string(reinterpret_cast<const char*>(input), input_length);
     }
-    else
-        // Skip CMR byte
+    else // Skip CMR byte
         buffer = std::string(reinterpret_cast<const char*>(input) + 1, input_length-1);