make tests green again

lib/pure/xmltree.nim

@@ -377,7 +377,6 @@ proc findAll*(n: XmlNode, tag: string, result: var seq[XmlNode]) =
   ##   findAll(html, "img", tags)
   ##   for imgTag in tags:
   ##     process(imgTag)
-  assert isNil(result) == false
   assert n.k == xnElement
   for child in n.items():
     if child.k != xnElement:

tests/parallel/tsendtwice.nim

@@ -1,11 +1,11 @@
 discard """
-  output: '''obj2 nil
-obj nil
-obj3 nil
+  output: '''obj2 @[]
+obj @[]
+obj3 @[]
 3
-obj2 nil
-obj nil
-obj3 nil'''
+obj2 @[]
+obj @[]
+obj3 @[]'''
   cmd: "nim c -r --threads:on $file"
 """
 

tests/system/tostring.nim

@@ -24,7 +24,7 @@ doAssert "nan" == $(0.0/0.0)
 # nil tests
 # maybe a bit inconsistent in types
 var x: seq[string]
-doAssert "nil" == $(x)
+doAssert "@[]" == $(x)
 
 var y: string
 doAssert "" == $(y)