Various toctou fixes#5007
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nschloe wants to merge 2 commits intoAlexays:masterfrom
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There were several toctou bugs, especially in
battery.cpp. Waybar check if a file exists, then after that opens it. If the file disappears in the time between the check and the open/read, Waybar will crash. This fixes many of those bugs by removing theexists()check, and simply trying to read file. If it fails, continue.