pimd: use socklen_t consistently
diff --git a/pimd/pim_sock.c b/pimd/pim_sock.c
index 2e78605..b80c0a2 100644
--- a/pimd/pim_sock.c
+++ b/pimd/pim_sock.c
@@ -375,7 +375,7 @@
   return loop;
 }
 
-int pim_socket_getsockname(int fd, struct sockaddr *name, int *namelen)
+int pim_socket_getsockname(int fd, struct sockaddr *name, socklen_t *namelen)
 {
   if (getsockname(fd, name, namelen)) {
     int e = errno;