gitlab-ci: export MESON_TESTTHREADS so meson actually sees it

Unlike NINJA_ARGS this isn't passed into meson, it's picked from the
env.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

diff --git a/.gitlab-ci/meson-build.sh b/.gitlab-ci/meson-build.sh
index cde92ba..df2a6a4 100755 (executable)
--- a/.gitlab-ci/meson-build.sh
+++ b/.gitlab-ci/meson-build.sh
@@ -23,7 +23,7 @@ fi
 
 if [[ -n "$FDO_CI_CONCURRENT" ]]; then
        NINJA_ARGS="-j$FDO_CI_CONCURRENT $NINJA_ARGS"
-       MESON_TESTTHREADS="$FDO_CI_CONCURRENT"
+       export MESON_TESTTHREADS="$FDO_CI_CONCURRENT"
 fi
 
 echo "*************************************************"