mgcp: Fix a filedescriptor leak in case the bind is failing.
diff --git a/openbsc/src/mgcp/mgcp_network.c b/openbsc/src/mgcp/mgcp_network.c
index bbc46f4..2123db7 100644
--- a/openbsc/src/mgcp/mgcp_network.c
+++ b/openbsc/src/mgcp/mgcp_network.c
@@ -346,6 +346,8 @@
 	inet_aton(source_addr, &addr.sin_addr);
 
 	if (bind(fd->fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
+		close(fd->fd);
+		fd->fd = -1;
 		return -1;
 	}