[jhbuild] core-3.26: use the gnome-3-26 branch of gdm

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 3ca8ff53d1886fcd08bd28dc24ccfc1d68fa27fe
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Sat Oct 28 17:38:24 2017 +0300

    core-3.26: use the gnome-3-26 branch of gdm

 modulesets/gnome-suites-core-3.26.modules |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/modulesets/gnome-suites-core-3.26.modules b/modulesets/gnome-suites-core-3.26.modules
index cbaa958..9215333 100644
--- a/modulesets/gnome-suites-core-3.26.modules
+++ b/modulesets/gnome-suites-core-3.26.modules
@@ -88,7 +88,7 @@
     <if condition-unset="linux">
       <autogenargs value="--without-plymouth"/>
     </if>
-    <branch/>
+    <branch revision="gnome-3-26"/>
     <dependencies>
       <dep package="accountsservice"/>
       <dep package="dbus-glib"/>