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-rw-r--r--components/script/dom/bindings/mozmap.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/components/script/dom/bindings/mozmap.rs b/components/script/dom/bindings/mozmap.rs
index 557ba0662a0..d44114cd057 100644
--- a/components/script/dom/bindings/mozmap.rs
+++ b/components/script/dom/bindings/mozmap.rs
@@ -23,6 +23,7 @@ use std::collections::HashMap;
use std::ops::Deref;
/// The `MozMap` (open-ended dictionary) type.
+#[derive(Clone)]
pub struct MozMap<T> {
map: HashMap<DOMString, T>,
}