appcelerator/titanium_mobile — pull request #4812 by salachi (2013-10-19 18:23:29+00:00)
Title: TIMOB-14521-Do the isNull check first before checking for other types

Looks like 2.3 satisfies the isBlob check for null value, moved the isNull check to the top so that null value will be handled first.
https://jira.appcelerator.org/browse/TIMOB-14521