avoid 2.13.13 boolean literal warnings

Author: SethTisue

core/src/main/scala/scala/collection/immutable/OldHashSet.scala

@@ -83,12 +83,12 @@ sealed abstract class OldHashSet[A]
 
   override def filter(p: A => Boolean) = {
     val buffer = new Array[OldHashSet[A]](bufferSize(size))
-    nullToEmpty(filter0(p, false, 0, buffer, 0))
+    nullToEmpty(filter0(p, negate = false, 0, buffer, 0))
   }
 
   override def filterNot(p: A => Boolean) = {
     val buffer = new Array[OldHashSet[A]](bufferSize(size))
-    nullToEmpty(filter0(p, true, 0, buffer, 0))
+    nullToEmpty(filter0(p, negate = true, 0, buffer, 0))
   }
 
   override def tail: OldHashSet[A] = this - head

core/src/main/scala/scala/collection/parallel/mutable/ParTrieMap.scala

@@ -52,7 +52,7 @@ extends ParMap[K, V]
 
   override def seq = ctrie
 
-  def splitter = new ParTrieMapSplitter(0, ctrie.readOnlySnapshot().asInstanceOf[TrieMap[K, V]], true)
+  def splitter = new ParTrieMapSplitter(0, ctrie.readOnlySnapshot().asInstanceOf[TrieMap[K, V]], mustInit = true)
 
   override def clear() = ctrie.clear()