Update KCanvasFiltersQuartz.mm to match style guidelines

[Eric Seidel (no email)]

Update KCanvasFiltersQuartz.mm to match style guidelines

This is a simple patch (99% spacing changes) to make the kcanvas filter code closer match our style 
guidelines.

I also made one small fix of a leak of CIContexts under error conditions (we were exiting early from a 
method which later performed cleanup).

[Eric Seidel (no email)]

Created attachment 5025 [details]
Code cleanup to match style guidelines (mostly spacing changes)

[Eric Seidel (no email)]

Created attachment 5026 [details]
A version of the patch ignoring whitespace

[Darin Adler]

Comment on attachment 5025 [details]
Code cleanup to match style guidelines (mostly spacing changes)

+static QString KCPreviousFilterOutputName = QString("__previousOutput__");

The above should just be:

static QString KCPreviousFilterOutputName = "__previousOutput__";

r=me on this change

Reading this code I see lots to comment on that has nothing to do with what the
patch changes -- maybe as part of code review.

[Eric Seidel (no email)]

Oliver might hate me... hopefully this won't cause to many conflicts w/ his patches in progress.