Fixed row height calculation for tables with only one row.

[sh2ezo]

If table has some dynamic content on row (in my case, it was a button, inserted inside 'render' event) and data has only one record, height of row calculates wrong way. Sorry for spaces instead of tabs. Saw your tabs on github after push.

[DataTables]

Are you able to give me a link to a page that shows the issue please? I'm not clear why adding one before and one after the current row would make a difference, since one of them is still going to be in the middle.

[sh2ezo]

example:
http://jsfiddle.net/Lqpw4rbc/28/

As you can see, while table with only one row scales wrongly, table with two rows scales right way. This happens because in second table your code can measure row with inserted button, but in first table it can't. My fix adds the ability for measuring row in first case.

[DataTables]

I'm with you know! I've made a few changes to Scroller recently which causes a merge conflict, so I've just committed it directly. It will be available in the next release.

Allan