Fix v-add-sys-phpmyadmin failed (#2336)

bin/v-add-sys-phpmailer

@@ -66,7 +66,7 @@ mkdir -p ${PM_INSTALL_DIR}/vendor
 chown $user: -R ${PM_INSTALL_DIR}/vendor
 
 openssl_installed=$(/usr/local/hestia/php/bin/php -m | grep openssl);
-if [ -z "$openssl_version"  ]; then 
+if [ -z "$openssl_installed"  ]; then 
     COMPOSER_HOME="$HOMEDIR/$user/.config/composer" user_exec /usr/bin/php $COMPOSER_BIN --quiet --no-dev install
 else
     COMPOSER_HOME="$HOMEDIR/$user/.config/composer" user_exec /usr/local/hestia/php/bin/php $COMPOSER_BIN --quiet --no-dev install