cmake: fix library path in openxr json manifest
Fixes a regression in !2040 (merged) where the library path in the json manifest was emtpy
Due to an influx of spam, we have had to impose restrictions on new accounts. Please see this wiki page for instructions on how to get full permissions. Sorry for the inconvenience.
Fixes a regression in !2040 (merged) where the library path in the json manifest was emtpy