client: use osmo_strlcpy instead of strncpy

simplify \nul termination of the ip_addr string

Change-Id: I94e3815f45d08e0d40faf41e580547de937c4ce8
diff --git a/tests/mgcp_client/mgcp_client_test.c b/tests/mgcp_client/mgcp_client_test.c
index 5fd59e9..37fe0b8 100644
--- a/tests/mgcp_client/mgcp_client_test.c
+++ b/tests/mgcp_client/mgcp_client_test.c
@@ -46,14 +46,14 @@
 	l = strlen(head);
 	msg->l2h = msgb_put(msg, l);
 	data = (char*)msgb_l2(msg);
-	strncpy(data, head, l);
+	osmo_strlcpy(data, head, l);
 
 	data = (char*)msgb_put(msg, 1);
 	*data = '\n';
 
 	l = strlen(params);
 	data = (char*)msgb_put(msg, l);
-	strncpy(data, params, l);
+	osmo_strlcpy(data, params, l);
 
 	return msg;
 }
@@ -66,7 +66,7 @@
 	char *data;
 	msg->l2h = msgb_put(msg, l);
 	data = (char*)msgb_l2(msg);
-	strncpy(data, str, l);
+	osmo_strlcpy(data, str, l);
 	return msg;
 }