Bug 25081: Fix wrong comment

Not directly related to previous patch, coming from 23435.

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>

serials/serials-edit.pl

@@ -404,7 +404,7 @@ if ( $op and $op eq 'serialchangestatus' ) {
                     $copy++;
                 }
 
-                } # num_copies for loop
+                } # if ( $item =~ /^N/ ) {
 
                 else {