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Rollup merge of #77078 - LingMan:patch-2, r=jonas-schievink

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Don't use an if guard to check equality with a constant

Match on it directly instead
This commit is contained in:
Jonas Schievink 2020-09-25 02:29:40 +02:00 committed by GitHub
commit 28e0bc997e
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compiler/rustc_attr/src/builtin.rs
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@ -301,7 +301,7 @@ where
.emit();
};
match issue.parse() {
Ok(num) if num == 0 => {
Ok(0) => {
emit_diag(
"`issue` must not be \"0\", \
use \"none\" instead",