fix test

Author: metagn

tests/ccgbugs/t20141.nim

@@ -16,12 +16,12 @@ template n[T, U](x: U): T =
 
 proc k() =
   var res: A
-  m(n[B](res))
+  m(n[B, A](res))
 
 proc w(mounter: U) = discard
 
 proc mount(proto: U) = discard
 proc v() = mount k
 
 # This is required for failure
-w(v)
+w(v)