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-rw-r--r--third_party/rust/thiserror-impl/src/ast.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/third_party/rust/thiserror-impl/src/ast.rs b/third_party/rust/thiserror-impl/src/ast.rs
index 9e06928980..4739d58beb 100644
--- a/third_party/rust/thiserror-impl/src/ast.rs
+++ b/third_party/rust/thiserror-impl/src/ast.rs
@@ -82,7 +82,7 @@ impl<'a> Enum<'a> {
.map(|node| {
let mut variant = Variant::from_syn(node, &scope, span)?;
if let display @ None = &mut variant.attrs.display {
- *display = attrs.display.clone();
+ display.clone_from(&attrs.display);
}
if let Some(display) = &mut variant.attrs.display {
display.expand_shorthand(&variant.fields);