FileUtil: Only attempt to write to the destination in Copy if there is actually content to write #10810
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…s actually content to write
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JosJuice
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Jul 5, 2022
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File::Copy()fails with empty files because<<sets failbit on the destination stream if nothing was written. The macOS updater usesFile::Copy()in a workaround for an OS quirk. A recent PR added empty files to theSysfolder, breaking the macOS updater.Fixes https://bugs.dolphin-emu.org/issues/12968.