[gtk-osx] Add strip attribute for xmlto patch.

[John Ralls <jralls src gnome org>]

commit 79e51c1072b321f8860a8820431c3aaab3b24974
Author: John Ralls <jralls ceridwen us>
Date:   Fri Jun 18 14:45:07 2021 -0700

    Add strip attribute for xmlto patch.

 modulesets-stable/gtk-osx-random.modules | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/modulesets-stable/gtk-osx-random.modules b/modulesets-stable/gtk-osx-random.modules
index 43e2cf84..3a7aa91c 100644
--- a/modulesets-stable/gtk-osx-random.modules
+++ b/modulesets-stable/gtk-osx-random.modules
@@ -125,7 +125,7 @@
     <branch module="xmlto/xmlto-0.0.28.tar.bz2"
             version="0.0.28" repo="paguire"
             hash="sha256:1130df3a7957eb9f6f0d29e4aa1c75732a7dfb6d639be013859b5c7ec5421276">
-      <patch file="https://gitlab.gnome.org/GNOME/gtk-osx/raw/master/patches/xmlto-allow-net-access.patch"/>
+      <patch file="https://gitlab.gnome.org/GNOME/gtk-osx/raw/master/patches/xmlto-allow-net-access.patch"; 
strip="1"/>
     </branch>
     <dependencies>
       <dep package="frodo-getopt"/>