Fixed Typo

src/modules/stack/install/ee_mod_setup_php.sh

@@ -69,7 +69,7 @@ function ee_mod_setup_php()
 
 		# Setup Zend OpCache as per RAM
 		grep memory_consumption /etc/php5/fpm/conf.d/05-opcache.ini &> /dev/null 
-		if [ $? -ne 0]; then
+		if [ $? -ne 0 ]; then
 			sed -i "s/zend_extension=opcache.so/zend_extension=opcache.so\nopcache.memory_consumption=${EE_OPCACHE_SIZE}\nopcache.max_accelerated_files=50000/" /etc/php5/fpm/conf.d/05-opcache.ini \
 			|| ee_lib_error "Unable to change opcache.memory_consumption, exit status = " $?
 		fi