Fixed some warnings.

diff --git a/server/request.c b/server/request.c
index 3fb7f7b..3067692 100644
--- a/server/request.c
+++ b/server/request.c
@@ -274,7 +274,7 @@
     {
         struct sockaddr_un dummy;
         int len = sizeof(dummy);
-        int client = accept( master_socket->obj.fd, &dummy, &len );
+        int client = accept( master_socket->obj.fd, (struct sockaddr *) &dummy, &len );
         if (client != -1) create_process( client, NULL, NULL, "", 1 );
     }
 }