Bug 7407: HidePatronName not working on 'on hold for' messages

Bug 7407: HidePatronName not working on 'on hold for' messages

HidePatronName was not working on 'on hold for' messages, only 'checked out to'
messages.  This resulted in the patrons name showing if the item was on hold for
them.

T:T scope issue; needs to be within itemloo.  This patch does that.
Signed-off-by: Nicole C. Engard <nengard@bywatersolutions.com>
Signed-off-by: Paul Poulain <paul.poulain@biblibre.com>
(cherry picked from commit b08ccda99d23cca5ee9e01bd351cb3605e9201af)

Signed-off-by: Chris Nighswonger <chris.nighswonger@gmail.com>