bolt: fix FTBFS with glib-2.58

resolves #2825

srcpkgs/bolt/patches/a9fda276415abb4c0ae7031271c2d5703c435086.patch

@@ -0,0 +1,32 @@
+From a9fda276415abb4c0ae7031271c2d5703c435086 Mon Sep 17 00:00:00 2001
+From: Christian Kellner <christian@kellner.me>
+Date: Fri, 15 Jun 2018 15:43:54 +0200
+Subject: [PATCH] test: common: no enum auto cleanup for glib > 2.57
+
+Newer glib (starting with 2.57) have gained support for autoptr
+cleanup functions for GEnumClass and GFlagsClass, so we don't
+need to define our own ones anymore.
+This change was already done to bolt-enums.c, but also is needed
+for the test.
+---
+ tests/test-common.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/tests/test-common.c b/tests/test-common.c
+index c44d8ae..eb50a81 100644
+--- tests/test-common.c
++++ tests/test-common.c
+@@ -43,8 +43,10 @@
+ #include <sys/stat.h>
+ #include <unistd.h> /* unlinkat */
+ 
++#if !GLIB_CHECK_VERSION (2, 57, 0)
+ G_DEFINE_AUTOPTR_CLEANUP_FUNC (GEnumClass, g_type_class_unref);
+ G_DEFINE_AUTOPTR_CLEANUP_FUNC (GFlagsClass, g_type_class_unref);
++#endif
+ 
+ static void
+ cleanup_dir (DIR *d)
+-- 
+2.18.0
+