Fixed few test failures if php.ini contains zend.assertions=-1

Author: dstogov

run-tests.php

@@ -254,6 +254,7 @@ function verify_config()
 		'log_errors_max_len=0',
 		'opcache.fast_shutdown=0',
 		'opcache.file_update_protection=0',
+		'zend.assertions=1',
 	);
 
 $no_file_cache = '-d opcache.file_cache= -d opcache.file_cache_only=0';