BDC-70000 Fix null pointer exception

[tle-bdc]

BillDotCom got a null pointer exception thrown from QBO SDK. It appears that the fault.getType() return Null and access equalsIgnoreCase throw Null Pointer Exception.

Caused by: java.lang.NullPointerException: null
	at com.intuit.ipp.interceptors.HandleResponseInterceptor.execute(HandleResponseInterceptor.java:107)
	at com.intuit.ipp.interceptors.IntuitInterceptorProvider.executeResponseInterceptors(IntuitInterceptorProvider.java:114)
	at com.intuit.ipp.interceptors.IntuitInterceptorProvider.executeInterceptors(IntuitInterceptorProvider.java:87)
	at com.intuit.ipp.services.DataService.executeInterceptors(DataService.java:159)
	at com.intuit.ipp.services.DataService.executeCDCQuery(DataService.java:672)

[fjolin-intuit]

Thanks @tle-bdc . I'll be having a look at this in the coming couple of weeks.