wrong use of settype()

[larsbo]

in the current commit the settype() function was misleadingly used in the CleanData() function. The result of settype() is not the manipulated data but a boolean result code. This results in empty inserts in many cases.

[Gummibeer]

yeah, sorry - my fault :(
copy'n'paste from my own code where i have an error-var. thx for this correction.

[4thguy]

Pull request to fix this bug has been submitted