fixed #183: fix for some assert.h that conflict with php.h NDEBUG stuffs

git-svn-id: svn://svn.lighttpd.net/xcache/branches/1.3@560 c26eb9a1-5813-0410-bd6c-c2e55f420ca7

xcache.c

@@ -448,7 +448,9 @@ static void xc_fillinfo_dmz(int cachetype, xc_cache_t *cache, zval *return_value
 #endif
 	}
 	add_assoc_zval_ex(return_value, ZEND_STRS("free_blocks"), blocks);
+#ifndef NDEBUG
 	assert(avail == handlers->avail(mem));
+#endif
 }
 /* }}} */
 static void xc_fillentry_dmz(xc_entry_t *entry, int del, zval *list TSRMLS_DC) /* {{{ */