add missing blank line

git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@2788 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

src/move.c

@@ -225,6 +225,7 @@ void do_down(void)
 	return;
 
     assert(current_y == current->lineno - edittop->lineno);
+
     current = current->next;
     current_x = actual_x(current->data, placewewant);