[jhbuild] 3.20: use the gnome-3-20 branch of libwnck

[Alberts Muktupāvels <muktupavels src gnome org>]

commit c56851e0c728379d59f6da09798578a57e47f4da
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Sat Nov 12 00:24:07 2016 +0200

    3.20: use the gnome-3-20 branch of libwnck

 modulesets/gnome-suites-core-deps-3.20.modules |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/modulesets/gnome-suites-core-deps-3.20.modules b/modulesets/gnome-suites-core-deps-3.20.modules
index 0301483..3bb2e54 100644
--- a/modulesets/gnome-suites-core-deps-3.20.modules
+++ b/modulesets/gnome-suites-core-deps-3.20.modules
@@ -1155,7 +1155,7 @@
 
   <!-- Deprecated -->
   <autotools id="libwnck">
-    <branch/>
+    <branch revision="gnome-3-20"/>
     <dependencies>
       <dep package="intltool"/>
       <dep package="gtk+"/>