add unused_mut lint
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@@ -119,7 +119,7 @@ pub unsafe extern "C" fn openlog(ident: *const c_char, opt: c_int, facility: c_i
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///
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/// Non-POSIX, 4.3BSD-Reno.
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#[unsafe(no_mangle)]
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pub unsafe extern "C" fn vsyslog(priority: c_int, message: *const c_char, mut ap: VaList) {
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pub unsafe extern "C" fn vsyslog(priority: c_int, message: *const c_char, ap: VaList) {
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let Some(message) = (unsafe { CStr::from_nullable_ptr(message) }) else {
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return;
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};
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