//
// typedef void (*WelsTraceCallback) (void* ctx, int level, const char* string);
-static void libopenh264_trace_callback(void *ctx, int level, char const *msg)
+static void libopenh264_trace_callback(void *ctx, int level, const char *msg)
{
// The message will be logged only if the requested EQUIVALENT ffmpeg log level is
// less than or equal to the current ffmpeg log level.