Simplify exiting interpreter with exception

quickjs-libc.c

@@ -161,7 +161,6 @@ typedef struct JSThreadState {
     struct list_head port_list; /* list of JSWorkerMessageHandler.link */
     int eval_script_recurse; /* only used in the main thread */
     int64_t next_timer_id; /* for setTimeout / setInterval */
-    JSValue exc; /* current exception from one of our handlers */
     BOOL can_js_os_poll;
     /* not used in the main thread */
     JSWorkerMessagePipe *recv_pipe, *send_pipe;
@@ -2274,12 +2273,8 @@ static int call_handler(JSContext *ctx, JSValue func)
     ret = JS_Call(ctx, func1, JS_UNDEFINED, 0, NULL);
     JS_FreeValue(ctx, func1);
     r = 0;
-    if (JS_IsException(ret)) {
-        JSRuntime *rt = JS_GetRuntime(ctx);
-        JSThreadState *ts = js_get_thread_state(rt);
-        ts->exc = JS_GetException(ctx);
+    if (JS_IsException(ret))
         r = -1;
-    }
     JS_FreeValue(ctx, ret);
     return r;
 }
@@ -4082,7 +4077,6 @@ void js_std_init_handlers(JSRuntime *rt)
     init_list_head(&ts->port_list);
 
     ts->next_timer_id = 1;
-    ts->exc = JS_UNDEFINED;
 
     js_set_thread_state(rt, ts);
     JS_AddRuntimeFinalizer(rt, js_std_finalize, ts);
@@ -4189,10 +4183,8 @@ JSValue js_std_loop(JSContext *ctx)
         for(;;) {
             err = JS_ExecutePendingJob(JS_GetRuntime(ctx), &ctx1);
             if (err <= 0) {
-                if (err < 0) {
-                    ts->exc = JS_GetException(ctx1);
+                if (err < 0)
                     goto done;
-                }
                 break;
             }
         }
@@ -4201,9 +4193,9 @@ JSValue js_std_loop(JSContext *ctx)
             break;
     }
 done:
-    ret = ts->exc;
-    ts->exc = JS_UNDEFINED;
-    return ret;
+    if (JS_HasException(ctx))
+        return JS_GetException(ctx);
+    return JS_UNDEFINED;
 }
 
 /* Wait for a promise and execute pending jobs while waiting for