list:remove 保护处理 #248

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wangyhzzz wants to merge 1 commit into topameng:master from wangyhzzz:master

wangyhzzz commented Apr 21, 2022 •

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list remove的一个bug，重现步骤如下：

new list ,push A
clear list
push B,push C
list remove A
这个时候，A已不在列表中了，但强行连接prev 和next 将会把list错误的设置为空列表。
在这里加一个判断，以防止此类问题发生


          list:remove 保护处理

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