Switch from parentheses to nested if statements for the RPM scriptlets.

scripts/postinst.sh

@@ -6,7 +6,8 @@ set -e
 #
 # TODO: This is only tested on Debian.
 #
-if ( [ "$1" = "configure" ] || [ "$1" = "1" ] ) && [ -d /run/systemd/system ]; then
+if [ "$1" = "configure" ] || [ "$1" = "1" ]; then
+  if [ -d /run/systemd/system ]; then
     # Create ntfy user/group
     id ntfy >/dev/null 2>&1 || useradd --system --no-create-home ntfy
     chown ntfy.ntfy /var/cache/ntfy
@@ -40,4 +41,5 @@ if ( [ "$1" = "configure" ] || [ "$1" = "1" ] ) && [ -d /run/systemd/system ]; t
         systemctl restart ntfy-client.service >/dev/null || true
       fi
     fi
+  fi
 fi

scripts/prerm.sh

@@ -2,11 +2,13 @@
 set -e
 
 # Stop systemd service
-if [ -d /run/systemd/system ] && ( [ "$1" = remove ] || [ "$1" = "0" ] ); then
+if [ -d /run/systemd/system ]; then
+  if [ "$1" = remove ] || [ "$1" = "0" ]; then
     echo "Stopping ntfy.service ..."
     if [ -x /usr/bin/deb-systemd-invoke ]; then
       deb-systemd-invoke stop 'ntfy.service' >/dev/null || true
     else
       systemctl stop ntfy >/dev/null 2>&1 || true
     fi
+  fi
 fi