stack_buf improvement after code review
stack_buf improvement after code review

ksophocleous/spdlog,mihadyuk/spdlog,hunter-packages/spdlog,chenyu2202863/spdlog,COMBINE-lab/spdlog,fcoulombe/spdlog,GamePad64/spdlog,godbyk/spdlog,GreatFruitOmsk/spdlog,gregoire-astruc/spdlog,COMBINE-lab/spdlog,mihadyuk/spdlog,icylord/spdlog,mihadyuk/spdlog,COMBINE-lab/spdlog,hunter-packages/spdlog,chenyu2202863/spdlog,hunter-packages/spdlog,gnzlbg/spdlog,icylord/spdlog,godbyk/spdlog,simonhang/spdlog,simonhang/spdlog,gnzlbg/spdlog,fcoulombe/spdlog,godbyk/spdlog,ksophocleous/spdlog,GreatFruitOmsk/spdlog,GamePad64/spdlog,icylord/spdlog,gregoire-astruc/spdlog