Fix unapplySeq property test for 2.13

Name-based pattern matching dropped in 2.13.0-M5

Author: ashawley

Diff for: shared/src/test/scala/scala/xml/ElemSpec.scala

@@ -63,7 +63,7 @@ object ElemSpec extends PropertiesFor("Elem")
         case _: SpecialNode | _: Group =>
           opt ?= None
         case _ =>
-          opt ?= Some((n.prefix, n.label, n.attributes, n.scope, n.child))
+          opt ?= Some((n.prefix, n.label, n.attributes, n.scope, n.child.toSeq))
       })
     }
   }

Diff for: shared/src/test/scala/scala/xml/NodeSpec.scala

@@ -340,7 +340,7 @@ object NodeSpec extends CheckProperties("Node")
             Node.unapplySeq(n)
           }
         case _ =>
-          Node.unapplySeq(n) ?= Some((n.label, n.attributes, n.child))
+          Node.unapplySeq(n) ?= Some((n.label, n.attributes, n.child.toSeq))
       })
     }
   }

Diff for: shared/src/test/scala/scala/xml/QNodeSpec.scala

@@ -18,7 +18,7 @@ object QNodeSpec extends CheckProperties("QNode")
   property("unapplySeq") = {
     Prop.forAll { n: Node =>
       val res = QNode.unapplySeq(n)
-      res ?= Some((n.scope.getURI(n.prefix), n.label, n.attributes, n.child))
+      res ?= Some((n.scope.getURI(n.prefix), n.label, n.attributes, n.child.toSeq))
     }
   }
 }