This reverts 151eed752b. Originally thought it was necessary to
initialize selected/active indices to -1 to prevent out-of-bounds
list access, but this is not needed since null checks are already
performed after obtaining list members via BLI_findlink().
In addition, leaving indices zero-initialized facilitates use of the
Python API, for example when displaying action map information in a
UI list.
This fixes two memory leaks related to XR action maps.
1. Freeing of action maps needs to be moved from wm_xr_exit() to
wm_xr_runtime_data_free() since the runtime may have already been
freed when calling wm_xr_exit().
2. Action bindings for action map items were not being freed. This
was mistakenly left out of e844e9e8f3 since the patch needed to be
updated after d3d4be1db3.
Although the relevant structs (wmXrRuntime/XrActionMap/
XrActionMapItem) are zero-allocated, the selected and active action
map indices need to be initialized to -1 to prevent potential
out-of-bounds list access.
Addresses the remaining portions of T77137 (Python API for Controller
Interaction), which was partially completed by D10942.
Adds an XR "action maps" system for loading XR action data from a
Python script. Action maps are accessible via the Python API, and are used
to pass default actions to the VR session during the
xr_session_start_pre() callback.
Since action maps are stored only as runtime data, they will be
cleaned up with the rest of the VR runtime data on file read or exit.
Reviewed By: Julian Eisel, Hans Goudey
Differential Revision: https://developer.blender.org/D10943
