Only attempt to convert title leaf to index if titleLeaf is set.
Only attempt to convert title leaf to index if titleLeaf is set.

garyrh/bookreader,yankl/bookreader,garyrh/bookreader,garyrh/bookreader,gootdude/bookreader,Islandora/internet_archive_bookreader,internetarchive/bookreader,openlibrary/bookreader,yankl/bookreader,openlibrary/bookreader,garyrh/bookreader,garyrh/bookreader,Islandora/internet_archive_bookreader,nikolas/bookreader,yankl/bookreader,nikolas/bookreader,brisandbeans/bookreader,niksu/bookreader,Islandora/internet_archive_bookreader,Islandora/internet_archive_bookreader,brisandbeans/bookreader,openlibrary/bookreader,gootdude/bookreader,niksu/bookreader,openlibrary/bookreader,brisandbeans/bookreader,brisandbeans/bookreader,Islandora/internet_archive_bookreader,yankl/bookreader,gootdude/bookreader,gootdude/bookreader,yankl/bookreader,niksu/bookreader,niksu/bookreader,openlibrary/bookreader,niksu/bookreader,brisandbeans/bookreader,internetarchive/bookreader