[Ohrrpgce] SVN: teeemcee/12091 gfx_sdl2: fix io_setmouse (movemouse) not working if mouse is outside th

[subversion at HamsterRepublic.com]

teeemcee
2020-12-01 20:46:41 -0800 (Tue, 01 Dec 2020)
313
gfx_sdl2: fix io_setmouse (movemouse) not working if mouse is outside the window

Now, arguably movemouse shouldn't move the mouse into the window if it wasn't
already, but gfx_sdl2 was inconsistent with the other backends.

This is an alternative fix for the graphics editor problem fixed in the previous
commit.
---
U   wip/gfx_sdl2.bas