Blender Git Loki

Fix: Instantly hide bones after hitting H key in pose sliding

When using a pose slider it is possible to hide bones with the 'H' key.
Before this patch the screen didn't update, so you had to move the mouse 1 pixel to update.
This patch makes it so it updates right away

Reviewed by: Sybren A. St�vel
Differential Revision: https://developer.blender.org/D12024
Ref: D12024