Fixes a thread-safety crash related to the ObjC Runtime (#216)
Fixes a thread-safety crash related to the ObjC Runtime (#216)

* Use the more safe objc_copyClassList instead of objc_getClassList to insure the class list isn't mutated by another thread between calls to getClassList.
teamsnap/teamsnap-SDK-iOS,teamsnap/teamsnap-SDK-iOS,teamsnap/teamsnap-SDK-iOS