libuuu: do not crash when using FB: write -format without @off or @size #402
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tq-schifferm
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…@size` Check the return code of ucmd.find(), so we don't attempt to replace with an out-of-bounds index when the command string does not contain the `@off` and `@size` patterns.
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Check the return code of ucmd.find(), so we don't attempt to replace with an out-of-bounds index when the command string does not contain the
@offand@sizepatterns.