Bug 11124: QA Follow-up resolving a warning and three typos

Bug 11124: QA Follow-up resolving a warning and three typos

Resolves warning on uninitialized author in split on line 128.
Just adds the same behavior for title on line 129 for completeness.
Fixes typo on occurrences and two other minor typos.

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>
(cherry picked from commit 1219b3153ee3501d61f22a767b7b3e68c7c8933e)
Signed-off-by: Fridolin SOMERS <fridolin.somers@biblibre.com>