[vala/0.40] Don't use broken and unsupported cast expression as statement

[Rico Tzschichholz <ricotz src gnome org>]

commit d0fa8d426953462c6edc9fd243597e7958a2898b
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Tue Sep 29 18:39:45 2020 +0200

    Don't use broken and unsupported cast expression as statement

 libvaladoc/documentation/gtkdocmarkdownparser.vala | 4 ++--
 tests/objects/generics.vala                        | 1 -
 2 files changed, 2 insertions(+), 3 deletions(-)
---
diff --git a/libvaladoc/documentation/gtkdocmarkdownparser.vala 
b/libvaladoc/documentation/gtkdocmarkdownparser.vala
index 36b1033e3..c918b77cc 100644
--- a/libvaladoc/documentation/gtkdocmarkdownparser.vala
+++ b/libvaladoc/documentation/gtkdocmarkdownparser.vala
@@ -443,7 +443,7 @@ public class Valadoc.Gtkdoc.MarkdownParser : Object, ResourceLocator {
                        }
                })
                .set_reduce (() => {
-                       (Content.List) pop ();
+                       pop ();
                })
                .set_name ("UnorderedList");
 
@@ -472,7 +472,7 @@ public class Valadoc.Gtkdoc.MarkdownParser : Object, ResourceLocator {
                        }
                })
                .set_reduce (() => {
-                       (Content.List) pop ();
+                       pop ();
                })
                .set_name ("OrderedList");
 
diff --git a/tests/objects/generics.vala b/tests/objects/generics.vala
index 8b39db945..7ea0f7158 100644
--- a/tests/objects/generics.vala
+++ b/tests/objects/generics.vala
@@ -3,5 +3,4 @@ void main() {
        // functions that are agnostic with regard to the actual type arguments.
 
        GLib.HashTable<int, string> h = (GLib.HashTable) null;
-       (void) h;
 }