[pango/ci-fixes] ci: ignore leaks in libxml2

[Matthias Clasen <matthiasc src gnome org>]

commit 1e834ee9078bda6b0acc7610c1d4bbb8e6704aa7
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Feb 16 15:18:35 2021 -0500

    ci: ignore leaks in libxml2

 lsan.supp | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/lsan.supp b/lsan.supp
index 8831e7a4..77a50c41 100644
--- a/lsan.supp
+++ b/lsan.supp
@@ -4,3 +4,4 @@ leak:libcairo.so
 leak:libpixman-1.so
 leak:libthai.so
 leak:libdatrie.so
+leak:libxml2.so