Avoid a No tables found when deleting the last table of a db and the table limit offset becomes greater than the number of tables

libraries/common.lib.php

@@ -902,6 +902,11 @@ function PMA_reloadNavigation()
 
     // Reloads the navigation frame via JavaScript if required
     if (isset($GLOBALS['reload']) && $GLOBALS['reload']) {
+        // one of the reasons for a reload is when a table is dropped
+        // in this case, get rid of the table limit offset, otherwise
+        // we have a problem when dropping a table on the last page
+        // and the offset becomes greater than the total number of tables
+        unset($_SESSION['table_limit_offset']);
         echo "\n";
         $reload_url = './navigation.php?' . PMA_generate_common_url($GLOBALS['db'], '', '&');
         ?>

sql.php

@@ -204,7 +204,7 @@ if ($do_confirm) {
 
 
 // Defines some variables
-// A table has to be created or renamed -> left frame should be reloaded
+// A table has to be created, renamed, dropped -> navi frame should be reloaded
 /**
  * @todo use the parser/analyzer
  */