Fix unused import error on wasm

beepster4096 · web-flow · commit 28e0d2f23497 · 2020-12-18T14:53:55.000-08:00
diff --git a/library/core/tests/mem.rs b/library/core/tests/mem.rs
@@ -1,5 +1,6 @@
 use core::mem::*;
 
+#[cfg(panic = "unwind")]
 use std::rc::Rc;
 
 #[test]
