If the user clicked away from the source, while the transform dialog is open,
the whole dialog would be disabled. The user then couldn't click close or
press escape to close the dialog. The only way for them to close it was to
click on another source to re-enable it.
When creating a group, a newly allocated group `sub_scene` is released
just after calling `obs_scene_add_internal`.
If another thread released the scene-item, which is the sub_scene,
use-after-free might happen.
The undo/redo functions are setting the current scene. Everytime
it would do this, it would actually transition to the scene.
This forces the current scene, so it fixes a bug where the
transition would be grayed out when undoing/redoing.
Code submissions have continually suffered from formatting
inconsistencies that constantly have to be addressed. Using
clang-format simplifies this by making code formatting more consistent,
and allows automation of the code formatting so that maintainers can
focus more on the code itself instead of code formatting.
