client: Don't abort when sending a request fails

Instead, set a fatal display error which will let an application
using libwayland-client shutdown cleanly.

Signed-off-by: Manuel Stoeckl <code@mstoeckl.com>
1 job for no-abort in 1 minute and 28 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #419399
build-native

00:01:28