This patch allows to fallback on zlib subproject
source_url = http://xmlsoft.org/sources/libxml2-2.9.7.tar.gz
source_filename = libxml2-2.9.7.tar.gz
source_hash = f63c5e7d30362ed28b38bfa1ac6313f9a80230720b7fb6c80575eeab3ff5900c
-patch_url = https://github.com/mesonbuild/libxml2/releases/download/2.9.7-5/libxml2.zip
+patch_url = https://github.com/mesonbuild/libxml2/releases/download/2.9.7-6/libxml2.zip
patch_filename = libxml2.zip
-patch_hash = aed5d6719eb96da0fb3cf284d88c4af486fd6b7754aec40b2be9a5ffd9ecadab
+patch_hash = 4f56174fef39fdcc83f235e7021f18ec638403ab3ee2c314fb2509a8bf599b27