Fix for double free in KdTreeFLANN after copy operation #335.

[jpajarin]

This fix changes the float *cloud_ pointer into a boost::shared_array structure, and substitutes malloc/free with new[]/delete[] operators.

[taketwo]

Looks good now, though we'll need to add spaces in between function names and braces to comply to the PCL style guide. Could you do this? Then I will merge.

By the way, there is no need to close this pull request and open a new one. Simply add a new commit with a fix, then squash it with the previous one and push to your fork with --force flag. The pull request will be updated accordingly. Please let me know if you need assistance with that.

[jpajarin]

Thanks for the information, this is my first bug fix on github.
I added the missing spaces. Sorry for not reading the style guide more carefully before.

I also did a git squash and push. For some reason also a commit from Nizar Sallem, which was already merged into master, is shown above (git rebase did something to the commit log?). If this is a problem, I can try to fix it.

[taketwo]

For some reason also a commit from Nizar Sallem, which was already merged into master, is shown above (git rebase did something to the commit log?). If this is a problem, I can try to fix it.

The thing is, though this patch of Nizar is already in the master, it is known under a different "name" there. Specifically, it's hash is 346e44c, whereas the very same changeset in your branch goes with hash 23ad599. Therefore if I merge your request, this patch will appear twice in the history.

You can easily remove the commit though. Just do: git rebase -i HEAD~2, then delete the line with the commit in question, save and close the editor. Push with force again.

[taketwo]

Okay, merging this. Thanks for the contribution, Joni!