swr: refactor swr_create_screen to allow for proper cleanup on error

This makes the following changes to address cleanup issues:
- Error conditions now return NULL instead of calling exit()
- swr_creen is now freed upon error, rather than leak.
- Library handle from dlopen is now closed upon swr_screen destruction

v2: Added additional context in commit msg and remove unnecessary "PUBLIC"
v3: Fix typo in commit message.

Signed-off-by: Chuck Atkins <[email protected]>
Reviewed-by: Emil Velikov <[email protected]>
Cc: Bruce Cherniak <[email protected]>
Cc: Tim Rowley <[email protected]>
cc: [email protected]

0 files changed, 0 insertions, 0 deletions