FS-9958: [freeswitch-core,mod_local_stream] Add agc object and use it in mod_local_stream

src/mod/formats/mod_local_stream/mod_local_stream.c

@@ -1416,6 +1416,7 @@ SWITCH_STANDARD_API(local_stream_function)
 					if (source->agc) {
 						switch_agc_destroy(&source->agc);
 					}
+					source->energy_avg = 0;
 				}
 			}