Merge pull request scala#7759 from moonchanyong/sizePredicate-removed

fix comment

Author: joshlemer

src/library/scala/collection/immutable/HashMap.scala

@@ -521,7 +521,7 @@ private final class BitmapIndexedMapNode[K, +V](
       val subNode = this.getNode(index)
 
       val subNodeNew = subNode.removed(key, originalHash, keyHash, shift + BitPartitionSize)
-      // assert(subNodeNew.sizePredicate != SizeEmpty, "Sub-node must have at least one element.")
+      // assert(subNodeNew.size != 0, "Sub-node must have at least one element.")
 
       if (subNodeNew eq subNode) return this
 

src/library/scala/collection/immutable/HashSet.scala

@@ -408,7 +408,7 @@ private final class BitmapIndexedSetNode[A](
       val subNode = this.getNode(index)
 
       val subNodeNew = subNode.removed(element, originalHash, elementHash, shift + BitPartitionSize)
-      // assert(subNodeNew.sizePredicate != SizeEmpty, "Sub-node must have at least one element.")
+      // assert(subNodeNew.size != 0, "Sub-node must have at least one element.")
 
       // cache just in case subNodeNew is a hashCollision node, in which in which case a little arithmetic is avoided
       // in Vector#length