fixing a typo s/tab/tag/

Signed-off-by: Joshua Ferraro <jmf@liblime.com>

diff --git a/C4/Biblio.pm b/C4/Biblio.pm
index 06b4883..35de382 100755 (executable)
--- a/C4/Biblio.pm
+++ b/C4/Biblio.pm
@@ -697,7 +697,7 @@ sub GetMarcStructure {
     {
         $res->{$tag}->{lib} =
           ( $forlibrarian or !$libopac ) ? $liblibrarian : $libopac;
-        $res->{$tab}->{tab}        = "";
+        $res->{$tag}->{tab}        = "";
         $res->{$tag}->{mandatory}  = $mandatory;
         $res->{$tag}->{repeatable} = $repeatable;
     }