Bug 10952: (follow-up) clear seach history from session after saving it to DB

This patch makes sure that the search history from an
anonymous session is cleared from the session after a user
logs in (and the session history is saved to that user's
record in the database).  This fixes a problem where the
search history from the session got repeatedly added to the
database each time the user did something while logged
into the OPAC.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
(cherry picked from commit 914515202d)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>

C4/Auth.pm

@@ -273,6 +273,9 @@ sub get_template_and_user {
                            $_->{'time'},
                         ) foreach @recentSearches;
 
+                # clear out the search history from the session now that
+                # we've saved it to the database
+                SetSearchHistorySession($in->{'query'}, []);
             }
         }
     }