[gjs: 2/3] CI: do not allow parallelism while testing

[Philip Chimento <pchimento src gnome org>]

commit 7659a784b8a4c0df380ca1fbd6c0dd412a5e02b4
Author: Claudio André <claudioandre br gmail com>
Date:   Tue Apr 24 17:40:36 2018 -0300

    CI: do not allow parallelism while testing
    
    It generates random crashes.

 test/extra/do_jhbuild.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/test/extra/do_jhbuild.sh b/test/extra/do_jhbuild.sh
index 78195b6a..6d2d0dbf 100755
--- a/test/extra/do_jhbuild.sh
+++ b/test/extra/do_jhbuild.sh
@@ -45,7 +45,7 @@ function do_Configure_MainBuild(){
 
     cat <<EOFILE > ~/.config/jhbuildrc
 module_autogenargs['gjs'] = "$autogenargs"
-module_makeargs['gjs'] = '-s'
+module_makeargs['gjs'] = '-s -j 1'
 skip = ['gettext', 'yelp-xsl', 'yelp-tools', 'gtk-doc']
 use_local_modulesets = True
 disable_Werror = False