CICD

dd: fix some clippy warnings 'variable does not need to be mutable' #11

Job	Run time
Style/cargo-deny	20s
Dependencies (ubuntu-latest, feat_os_unix)	17s
Code Coverage (ubuntu-latest, unix, nightly)	18s
Code Coverage (macos-latest, macos, nightly)	35s
Documentation/warnings (ubuntu-latest, feat_os_unix)	27s
Run the fuzzers	32s
Code Coverage (windows-latest, windows, nightly-x86_64-pc-windows-gnu)	1m 26s
MinRustV (ubuntu-latest, feat_os_unix)	5m 58s
Style/deps (ubuntu-latest, feat_Tier1,feat_require_unix,feat_require_unix_utmpx)	5m 54s
Style/format (ubuntu-latest, feat_os_unix)	19s
Style/deps (macos-latest, feat_Tier1,feat_require_unix,feat_require_unix_utmpx)	6m 19s
Style/deps (windows-latest, feat_os_windows)	12m 52s
Style/lint (ubuntu-latest, feat_os_unix)	27s
Style/spelling (ubuntu-latest, feat_os_unix)	1m 41s
Style/lint (macos-latest, feat_os_macos)	50s
Style/lint (windows-latest, feat_os_windows)	1m 43s
Build/nightly	0s
Build/Makefile	0s
Build/stable	0s
Build	0s
Binary sizes	0s
Tests/BusyBox test suite	0s
Tests/Toybox test suite	0s
	39m 58s

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