zeitgeist: fix build with new vala

srcpkgs/zeitgeist/patches/0001-Use-GenericArray-API-only.patch

@@ -0,0 +1,25 @@
+From 64ac3a6f94cd299e5e14945dc31b48f009dec152 Mon Sep 17 00:00:00 2001
+From: Rico Tzschichholz <ricotz@ubuntu.com>
+Date: Wed, 30 Dec 2020 16:50:32 +0100
+Subject: [PATCH] Use GenericArray API only
+
+---
+ libzeitgeist/where-clause.vala | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/libzeitgeist/where-clause.vala b/libzeitgeist/where-clause.vala
+index 204e9b1a..c3e6fa62 100644
+--- a/libzeitgeist/where-clause.vala
++++ b/libzeitgeist/where-clause.vala
+@@ -216,7 +216,7 @@ namespace Zeitgeist
+ #else
+             long[] pointers = new long[gptrarr.length + 1];
+ #endif
+-            Memory.copy(pointers, ((PtrArray *) gptrarr)->pdata,
++            Memory.copy(pointers, (void*) gptrarr.data,
+                 gptrarr.length * sizeof (void *));
+             return (T[]) pointers;
+         }
+-- 
+2.31.1
+