SI-8932 Fix dropRight/takeRight implementations

I looked up at all the overrides of `IterableLike#takeRight` and
`IterableLike#dropRight` and replaced usages of its argument `n` with
`math.max(n, 0)` every time it was being used in an index subtraction.

Fixes [SI-8932](https://issues.scala-lang.org/browse/SI-8932).

1 files changed, 2 insertions, 2 deletions

diff --git a/src/library/scala/collection/IterableViewLike.scala b/src/library/scala/collection/IterableViewLike.scala
index 668190f700..b84d90c51b 100644
--- a/src/library/scala/collection/IterableViewLike.scala
+++ b/src/library/scala/collection/IterableViewLike.scala
@@ -150,10 +150,10 @@ trait IterableViewLike[+A,
     sliding(size, 1) // we could inherit this, but that implies knowledge of the way the super class is implemented.
 
   override def dropRight(n: Int): This =
-    take(thisSeq.length - n)
+    take(thisSeq.length - math.max(n, 0))
 
   override def takeRight(n: Int): This =
-    drop(thisSeq.length - n)
+    drop(thisSeq.length - math.max(n, 0))
 
   override def stringPrefix = "IterableView"
 }