Bug 33055: (bug 32624 follow-up) Don't send a screen message if not blocked

Bug 33055: (bug 32624 follow-up) Don't send a screen message if not blocked

To test:
0 - Apply first patch
1 - prove -v t/db_dependent/SIP/Patron.t
2 - It fails
3 - Apply second patch
4 - prove -v t/db_dependent/SIP/Patron.t
5 - It passes!

Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
(cherry picked from commit 6c5c35aa32a7ff61e46d9198dee55a0239f55f96)
Signed-off-by: Matt Blenkinsop <matt.blenkinsop@ptfs-europe.com>
(cherry picked from commit a076542019dee21a64e18a43977d7256d266c80c)

Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>
(cherry picked from commit 69cfbbabe39347e33ab9efc3ecf4fd3fd9d5f6f4)
Signed-off-by: Arthur Suzuki <arthur.suzuki@biblibre.com>