Fix remember subsearch when use setttings form, a=chris

diff --git a/src/views/elements/SearchoptionsElement.php b/src/views/elements/SearchoptionsElement.php
index d0949277f..4492e5561 100644
--- a/src/views/elements/SearchoptionsElement.php
+++ b/src/views/elements/SearchoptionsElement.php
@@ -139,12 +139,16 @@ class SearchoptionsElement extends Element
         }?>
         <h2 class="option-heading" ><?=
             tl('searchoptions_element_searchsettings')?></h2>
-            <form id='settings-form' method="post">
-            <?php
-                if (!empty($data['QUERY'])) { ?>
+            <form id='settings-form' method="post"><?php
+            if (!empty($data['QUERY'])) { ?>
                 <input type="hidden" name='q' value="<?=$data['QUERY'] ?>"/>
                 <?php
-            } ?>
+            }
+            if (!empty($data['SUBSEARCH'])) { ?>
+                <input type="hidden" name='s' value="<?=$data['SUBSEARCH'] ?>"/>
+                <?php
+            }
+            ?>
             <ul class='square-list'>
             <li><label for="time-period"><b><?=
                 tl('searchoptions_element_time_label') ?></b></label> <?php