fix bug with php dirs

lib.sh

@@ -87,8 +87,8 @@ HTTP2_CONF="/etc/apache2/mods-available/http2.conf"
 # PHP-FPM
 PHPVER=7.2
 PHP_FPM_DIR=/etc/php/$PHPVER/fpm
-PHP_INI=$PHP_FPM/php.ini
-PHP_POOL_DIR=$PHP_FPM/pool.d
+PHP_INI=$PHP_FPM_DIR/php.ini
+PHP_POOL_DIR=$PHP_FPM_DIR/pool.d
 # Adminer
 ADMINERDIR=/usr/share/adminer
 ADMINER_CONF=/etc/apache2/conf-available/adminer.conf