Description:
------------
Description
===========

Due to the zend_accel_blacklist_update_regexp() function not releasing/freeing memory allocated on the heap, a memory leak can occur. This relates to the *it pointer.

Code Snippet
============
static void zend_accel_blacklist_update_regexp(zend_blacklist *blacklist)
{
	const char *pcre_error;
	int i, pcre_error_offset;
	zend_regexp_list **regexp_list_it, *it;
	char regexp[12*1024], *p, *end, *c, *backtrack = NULL;

----------SNIP---------
		it = (zend_regexp_list*)malloc(sizeof(zend_regexp_list));
			if (!it) {
				zend_accel_error(ACCEL_LOG_ERROR, "malloc() failed\n");
				return;
			}
			it->next = NULL;

			if ((it->re = pcre_compile(regexp, PCRE_NO_AUTO_CAPTURE, &pcre_error, &pcre_error_offset, 0)) == NULL) {
				blacklist_report_regexp_error(pcre_error, pcre_error_offset);
			}
			/* prepare for the next iteration */
			p = regexp + 2;
			*regexp_list_it = it;
			regexp_list_it = &it->next;
----------SNIP---------

Expected result:
----------------
An expected result it that the *it pointer is free'd after finish of use, as opposed to using up unnecessary system resources.

Actual result:
--------------
A memory leak occurs.