[TYPO3-core] RFC: #11771: Cleanup of tceforms.php

[Steffen Kamper]

Hi,

i did a research with previewFieldValue-function.

It was introduced in rev 1817 from Kasper (28.11.2006) with this error, 
and not changed since that time. The (uninitialized) var $field is used 
for t3lib_BEfunc::thumbCode($rowCopy,$table,$field, ...
so it should be there to work proper. It seems that the thumb code is 
delivered also with uninitialized vars, but it's mot correct.

So this error is in all versions after this date, and should be fixed at 
least in 4_2 too.

vg Steffen