局部变量tm_new未初始化，该结构体变量中的tm_isdst值为栈中残留值，不确定，该值会影响是否使用夏令时，最终表现概率性使用夏令时，出现相差1小时的问题。将其初始化为0，默认不使用夏令时
局部变量tm_new未初始化，该结构体变量中的tm_isdst值为栈中残留值，不确定，该值会影响是否使用夏令时，最终表现概率性使用夏令时，出现相差1小时的问题。将其初始化为0，默认不使用夏令时

hezlog/rt-thread,ArdaFu/rt-thread,geniusgogo/rt-thread,weety/rt-thread,ArdaFu/rt-thread,weety/rt-thread,RT-Thread/rt-thread,weety/rt-thread,hezlog/rt-thread,RT-Thread/rt-thread,nongxiaoming/rt-thread,RT-Thread/rt-thread,geniusgogo/rt-thread,weety/rt-thread,geniusgogo/rt-thread,armink/rt-thread,nongxiaoming/rt-thread,nongxiaoming/rt-thread,hezlog/rt-thread,nongxiaoming/rt-thread,hezlog/rt-thread,nongxiaoming/rt-thread,geniusgogo/rt-thread,armink/rt-thread,weety/rt-thread,hezlog/rt-thread,RT-Thread/rt-thread,geniusgogo/rt-thread,RT-Thread/rt-thread,geniusgogo/rt-thread,hezlog/rt-thread,armink/rt-thread,weety/rt-thread,ArdaFu/rt-thread,armink/rt-thread,nongxiaoming/rt-thread,armink/rt-thread,ArdaFu/rt-thread,RT-Thread/rt-thread,ArdaFu/rt-thread,armink/rt-thread,hezlog/rt-thread,armink/rt-thread,RT-Thread/rt-thread,nongxiaoming/rt-thread,weety/rt-thread,ArdaFu/rt-thread,ArdaFu/rt-thread,geniusgogo/rt-thread