Fix tests some more

tests/objvariant/tadrdisc.nim

@@ -1,7 +1,7 @@
 discard """
   file: "tadrdisc.nim"
   line: 20
-  errormsg: "for a \'var\' type a variable needs to be passed"
+  errormsg: "type mismatch: got (TKind)"
 """
 # Test that the address of a dicriminants cannot be taken
 
@@ -12,12 +12,9 @@ type
     of ka: x, y: int
     of kb: a, b: string
     of kc: c, d: float
-    
-proc setKind(k: var TKind) = 
+
+proc setKind(k: var TKind) =
   k = kc
-  
+
 var a: TA
-setKind(a.k) #ERROR_MSG for a 'var' type a variable needs to be passed
-
-
-
+setKind(a.k)