Fix fully initializing JSStackFrame

Fixes: #323

Author: saghul

quickjs.c

@@ -14574,6 +14574,7 @@ static JSValue JS_CallInternal(JSContext *caller_ctx, JSValue func_obj,
     if (js_check_stack_overflow(rt, alloca_size))
         return JS_ThrowStackOverflow(caller_ctx);
 
+    sf->cur_pc = NULL;
     sf->js_mode = b->js_mode;
     arg_buf = argv;
     sf->arg_count = argc;