explicit cast from void*

Author: sphaero

src/zoscdump.c

@@ -196,11 +196,11 @@ main (int argc, char *argv [])
     }
 
     zpoller_destroy(&poller);
-    zsock_t *sock = zlist_first(sockets);
+    zsock_t *sock = (zsock_t *)zlist_first(sockets);
     while (sock)
     {
         zsock_destroy(&sock);
-        sock = zlist_next(sockets);
+        sock = (zsock_t *)zlist_next(sockets);
     }
 
     return ret;