remsim_client: Fix memory leak receiving RSPRO messages

Change-Id: Ic3b5b7b03d557557a245fcd5c31bd687e11c7477
Closes: OS#4119
diff --git a/src/simtrace2-remsim_client.c b/src/simtrace2-remsim_client.c
index 9bedf71..04aa0c6 100644
--- a/src/simtrace2-remsim_client.c
+++ b/src/simtrace2-remsim_client.c
@@ -627,7 +627,7 @@
 	LOGPFSML(bc->bankd_fi, LOGL_DEBUG, "Received RSPRO %s\n", msgb_hexdump(msg));
 
 	rc = bankd_handle_msg(bc, msg);
-
+	msgb_free(msg);
 	return rc;
 
 invalid: