Fix lua intf thread cancellation and cleanup properly in vlc.net.poll().

modules/misc/lua/intf.c

@@ -312,6 +312,8 @@ void Close_LuaIntf( vlc_object_t *p_this )
     intf_thread_t *p_intf = (intf_thread_t*)p_this;
     intf_sys_t *p_sys = p_intf->p_sys;
 
+    vlc_cancel( p_sys->thread );
+
     vlc_mutex_lock( &p_sys->lock );
     p_sys->exiting = true;
     vlc_cond_signal( &p_sys->wait );

modules/misc/lua/libs/net.c

@@ -194,6 +194,7 @@ static int vlclua_net_poll( lua_State *L )
         lua_pop( L, 1 );
     }
     struct pollfd *p_fds = malloc( i_fds * sizeof( struct pollfd ) );
+    vlc_cleanup_push( free, p_fds );
     lua_pushnil( L );
     int i = 0;
     while( lua_next( L, 1 ) )
@@ -212,8 +213,8 @@ static int vlclua_net_poll( lua_State *L )
         lua_pushinteger( L, p_fds[i].revents );
         lua_settable( L, 1 );
     }
-    free( p_fds );
     lua_pushinteger( L, i_ret );
+    vlc_cleanup_run();
     return 1;
 }