Add missing global variable 'SCRIPT' required by v-restart-* scripts

func/main.sh

@@ -18,6 +18,7 @@ SENDMAIL="$HESTIA/web/inc/mail-wrapper.php"
 HESTIA_GIT_REPO="https://raw.githubusercontent.com/hestiacp/hestiacp"
 HESTIA_THEMES="$HESTIA/themes"
 HESTIA_THEMES_CUSTOM="$HESTIA/data/templates/themes"
+SCRIPT="$(basename $0)"
 
 # Return codes
 OK=0