test-gvariant: Add missing spaces before parens

Signed-off-by: Christophe Fergeau <cfergeau@redhat.com>
8 jobs for gvariant in 26 minutes and 19 seconds (queued for 1 second)
latest
Status Job ID Name Coverage
  Build
passed #136566
cross-android_api21_arm64

00:01:36

passed #136567
cross-android_api28_arm64

00:01:34

passed #136568
cross-mingw64

00:02:13

passed #136565
fedora-autotools-x86_64

00:05:53

passed #136564
fedora-x86_64

00:06:16

passed #136569
win32
msys2-mingw32

00:11:15

passed #136570
win32
vs2017-x64

00:07:39

 
  Coverage
passed #136571
coverage

00:01:57

75.0%