[anjuta] build: Allow building with vala 0.50

[Rico Tzschichholz <ricotz src gnome org>]

commit 8f8fa97a3592a27e4affe796a77a1638ee88876e
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Fri Aug 20 08:26:49 2021 +0200

    build: Allow building with vala 0.50

 plugins/language-support-vala/plugin.vala | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/plugins/language-support-vala/plugin.vala b/plugins/language-support-vala/plugin.vala
index 718d74cc8..d94634c7f 100644
--- a/plugins/language-support-vala/plugin.vala
+++ b/plugins/language-support-vala/plugin.vala
@@ -78,7 +78,11 @@ public class ValaPlugin : Plugin, IAnjuta.Preferences {
 
        void init_context () {
                context = new Vala.CodeContext();
+#if VALA_0_50
+               context.set_target_profile (Vala.Profile.GOBJECT);
+#else
                context.profile = Vala.Profile.GOBJECT;
+#endif
                context.report = report;
                report.clear_error_indicators ();