Fix compilation error in ffmpeg JNI layer

PiperOrigin-RevId: 490263003

libraries/decoder_ffmpeg/src/main/jni/ffmpeg_jni.cc

@@ -92,7 +92,7 @@ int decodePacket(AVCodecContext *context, AVPacket *packet,
 /**
 /**
  * Transforms ffmpeg AVERROR into a negative AUDIO_DECODER_ERROR constant value.
  * Transforms ffmpeg AVERROR into a negative AUDIO_DECODER_ERROR constant value.
  */
  */
-int transformError(const char *functionName, int errorNumber);
+int transformError(int errorNumber);
 
 
 /**
 /**
  * Outputs a log message describing the avcodec error number.
  * Outputs a log message describing the avcodec error number.
@@ -349,8 +349,8 @@ int decodePacket(AVCodecContext *context, AVPacket *packet,
   return outSize;
   return outSize;
 }
 }
 
 
-int transformError(int result) {
-  return result == AVERROR_INVALIDDATA ? AUDIO_DECODER_ERROR_INVALID_DATA
+int transformError(int errorNumber) {
+  return errorNumber == AVERROR_INVALIDDATA ? AUDIO_DECODER_ERROR_INVALID_DATA
                                             : AUDIO_DECODER_ERROR_OTHER;
                                             : AUDIO_DECODER_ERROR_OTHER;
 }
 }