[pygobject] valgrind: ignore some fontconfig leaks

[Christoph Reiter <creiter src gnome org>]

commit 8bc04db475097c99d2a5315c17ca76f3d97c37f6
Author: Christoph Reiter <reiter christoph gmail com>
Date:   Thu Apr 19 17:03:29 2018 +0200

    valgrind: ignore some fontconfig leaks

 tests/valgrind.supp | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
---
diff --git a/tests/valgrind.supp b/tests/valgrind.supp
index d08503de..aa4c0c29 100644
--- a/tests/valgrind.supp
+++ b/tests/valgrind.supp
@@ -9,3 +9,22 @@
    fun:wcstombs
    fun:encode_current_locale
 }
+
+{
+   <fontconfig>
+   Memcheck:Leak
+   match-leak-kinds: definite
+   fun:malloc
+   fun:FcPatternObjectInsertElt
+   fun:FcPatternObjectAddWithBinding
+}
+
+{
+   <fontconfig-2>
+   Memcheck:Leak
+   match-leak-kinds: definite
+   fun:malloc
+   fun:FcPatternCreate
+   fun:FcParsePattern
+   fun:FcEndElement
+}