More correct method of handing conversion failures...

src/sbbs3/js_bbs.cpp

@@ -1849,9 +1849,7 @@ js_spy(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 	if((sbbs=(sbbs_t*)JS_GetContextPrivate(cx))==NULL)
 		return(JS_FALSE);
 
-	if(JSVAL_IS_NUMBER(argv[0]))
-		JS_ValueToInt32(cx,argv[0],&node_num);
-	else
+	if(!JS_ValueToInt32(cx,argv[0],&node_num))
 		node_num=0;
 	sbbs->spy(node_num);