Some SOAP datatypes are not parsed correctly

I am using this module (thanks!) for a SOAP endpoint that has some datatypes with no actual property info, but rather is referred to in another property type:

http://preview.mindbodyonline.com/api/0_5/FinderService.asmx?wsdl

for example, the 'Item' datatype here has no properties, but seems like a meta type for other datatypes :

<s:complexType name="Item"/>
<s:complexType name="Service">
<s:complexContent mixed="false">
<s:extension base="tns:Item">
<s:sequence>
<s:element minOccurs="0" maxOccurs="1" name="Price" type="s:decimal"/>
<s:element minOccurs="0" maxOccurs="1" name="OnlinePrice" type="s:decimal"/>
<s:element minOccurs="0" maxOccurs="1" name="Action" type="tns:ActionCode"/>
<s:element minOccurs="0" maxOccurs="1" name="ID" type="s:string"/>
<s:element minOccurs="0" maxOccurs="1" name="Name" type="s:string"/>
<s:element minOccurs="0" maxOccurs="1" name="Count" nillable="true" type="s:int"/>
</s:sequence>
</s:extension>
</s:complexContent>
</s:complexType>

With no valid property info, the rules.inc function wsclient_type_info_populate chokes on line 105:

        $info['property info'] = $all_types[$type]['property info'];

This renders the entire site in an unusable state as rules module throws a bunch of errors continuously. Recommendations about handling this? Currently in the if block on line 102 I have changed this:

      if (!isset($info['property info']) && isset($all_types[$type]) && !isset($recursion_stop[$type])) {

to this:

      if (!isset($info['property info']) && isset($all_types[$type]['property info']) && !isset($recursion_stop[$type])) {

This stops the errors, but I was wondering if anyone knows what the consequences of this might be?