Fix latency reporting on OpenSL

src/cubeb_opensl.cpp

@@ -1891,8 +1891,10 @@ opensl_stream_get_latency(cubeb_stream * stm, uint32_t * latency)
   uint32_t stream_latency_frames =
       stm->user_output_rate * stm->output_latency_ms / 1000;
 
-  return static_cast<int>(stream_latency_frames +
-                          cubeb_resampler_latency(stm->resampler));
+  *latency = static_cast<int>(stream_latency_frames +
+                              cubeb_resampler_latency(stm->resampler));
+
+  return CUBEB_OK;
 }
 
 int