Bug 5815: Double clicking submits patron selection

Double clicking on an item in the list of matching names now automatically
submits the form when checking out to a patron by name rather than barcode.

Signed-off-by: Nicole C. Engard <nengard@bywatersolutions.com>
Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>

circ/circulation.pl

@@ -494,6 +494,7 @@ if ($borrowerslist) {
         -id       => 'borrowernumber',
         -values   => \@values,
         -labels   => \%labels,
+        -ondblclick => 'document.forms[\'mainform\'].submit()',
         -size     => 7,
         -tabindex => '',
         -multiple => 0