switchboard-plug-printers: fix build

srcpkgs/switchboard-plug-printers/patches/ftbfs.patch

@@ -0,0 +1,23 @@
+From 3175c2ebf106145a95355d2571e0a2aa4834e884 Mon Sep 17 00:00:00 2001
+From: Enerccio <admin@en-circle.com>
+Date: Tue, 17 Sep 2019 15:31:37 +0200
+Subject: [PATCH] Update cups.vapi (#118)
+
+Fixed bug with compilation
+---
+ vapi/cups.vapi | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/vapi/cups.vapi b/vapi/cups.vapi
+index 7f1b795..5dcdba6 100644
+--- vapi/cups.vapi
++++ vapi/cups.vapi
+@@ -605,7 +605,7 @@ namespace CUPS {
+ 			[CCode (cname = "ippAddBooleans")]
+ 			private unowned Attribute _add_booleans (Tag group, string name, [CCode (array_length_pos = 0.9)] char[] values);
+ 			public unowned Attribute add_booleans (Tag group, string name, bool[] values) {
+-				char[] char_values;
++				char[] char_values = {};
+ 				foreach (var val in values) {
+ 					char_values += val ? 1 : 0;
+ 				}