fix(judger): add missing RLIMIT_AS limit

Author: renbaoshuo

judger/uoj_judger/run/run_program.cpp

@@ -268,6 +268,7 @@ void run_child() {
 	set_limit(RLIMIT_CPU, run_program_config.time_limit, run_program_config.real_time_limit);
 	set_limit(RLIMIT_FSIZE, run_program_config.output_limit << 20);
 	set_limit(RLIMIT_STACK, run_program_config.stack_limit << 20);
+	set_limit(RLIMIT_AS, run_program_config.memory_limit << 20);
 
 	if (run_program_config.input_file_name != "stdin") {
 		if (freopen(run_program_config.input_file_name.c_str(), "r", stdin) == NULL) {