Rollup merge of #26164 - tafia:early-dedup, r=Gankro

No need to dedup if there is only 1 element in the vec, can early return

1 files changed, 1 insertions, 1 deletions

diff --git a/src/libcollections/vec.rs b/src/libcollections/vec.rs
index e7b700119f9..49f6fa53b01 100644
--- a/src/libcollections/vec.rs
+++ b/src/libcollections/vec.rs
@@ -1213,7 +1213,7 @@ impl<T: PartialEq> Vec<T> {
             // Duplicate, advance r. End of vec. Truncate to w.
 
             let ln = self.len();
-            if ln < 1 { return; }
+            if ln <= 1 { return; }
 
             // Avoid bounds checks by using raw pointers.
             let p = self.as_mut_ptr();