Fix shadowed variable warning

Author: garyb

src/Data/Array.purs

@@ -178,8 +178,8 @@ insert = insertBy compare
 -- | determine the ordering of elements.
 insertBy :: forall a. (a -> a -> Ordering) -> a -> Array a -> Array a
 insertBy cmp x ys =
-  let index = maybe 0 (+ 1) (findLastIndex (\y -> cmp x y == GT) ys)
-  in U.fromJust (insertAt index x ys)
+  let i = maybe 0 (+ 1) (findLastIndex (\y -> cmp x y == GT) ys)
+  in U.fromJust (insertAt i x ys)
 
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 -- Non-indexed reads -----------------------------------------------------------