Fix if statement

Author: jaapmarcus

install/upgrade/versions/1.4.6.sh

@@ -6,6 +6,6 @@
 #######                      Place additional commands below.                   #######
 #######################################################################################
 
-if [ -z "$DB_PMA_ALIAS" ]; then 
+if [ ! -z "$DB_PMA_ALIAS" ]; then 
     $HESTIA/bin/v-change-sys-db-alias 'pma' $DB_PMA_ALIAS
 fi