Fix neg test

Author: odersky

tests/neg/implicit-params.scala

@@ -5,11 +5,11 @@ object Test {
 
   def f(x: Int)(given c: C) = x + c.x
 
-  def g0(x: Int)(given c: C) (y: Int) = x + c.x + y  // error
+  def g0(x: Int)(given c: C) (y: Int) = x + c.x + y // now OK
 
   def g(x: Int)(given c: C)(given D) = x + c.x + summon[D].x  // OK
 
-  def h(x: Int) given () = x // error
+  def h(x: Int) given () = x // error: missing return type
 
   given C : C(11)
   given D : D(11)