[tracker-miners] meson: fix bashism in equality check

[Sam Thursfield <sthursfield src gnome org>]

commit 382de9a4e555c2a29be56603e0b828753797a49c
Author: Jeremy Bicha <jbicha ubuntu com>
Date:   Sun Nov 18 16:42:53 2018 -0500

    meson: fix bashism in equality check
    
    Thanks https://rgeissert.blogspot.com/2012/12/a-bashism-week-testing-for-equality.html
    
    and checkbashisms from Debian's devscripts
    
    Closes: https://gitlab.gnome.org/GNOME/tracker-miners/issues/38

 src/create-miner-symlinks.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/create-miner-symlinks.sh b/src/create-miner-symlinks.sh
index b4c2f00bf..5280a476e 100644
--- a/src/create-miner-symlinks.sh
+++ b/src/create-miner-symlinks.sh
@@ -13,9 +13,9 @@ have_tracker_miner_rss="$4"
 
 mkdir -p ${DESTDIR}/${tracker_miner_services_dir}
 ln -sf "${dbus_services_dir}/org.freedesktop.Tracker1.Miner.Extract.service" 
"${DESTDIR}/${tracker_miner_services_dir}/"
-if [[ "$have_tracker_miner_fs" == "true" ]]; then
+if ([ "$have_tracker_miner_fs" = "true" ]); then
   ln -sf "${dbus_services_dir}/org.freedesktop.Tracker1.Miner.Files.service" 
"${DESTDIR}/${tracker_miner_services_dir}/"
 fi
-if [[ "$have_tracker_miner_rss" == "true" ]]; then
+if ([ "$have_tracker_miner_rss" = "true" ]); then
   ln -sf "${dbus_services_dir}/org.freedesktop.Tracker1.Miner.RSS.service" 
"${DESTDIR}/${tracker_miner_services_dir}/"
 fi