Update theme.inc

Updates based on @jordandukart code review.

theme/theme.inc

@@ -53,7 +53,6 @@ function islandora_preprocess_islandora_default_edit(array &$variables) {
       'class' => 'datastream-size',
       'data' => islandora_datastream_get_human_readable_size($ds),
     );
-    if (user_access(ISLANDORA_VIEW_DATASTREAM_HISTORY)) {
     if (islandora_datastream_access(ISLANDORA_VIEW_DATASTREAM_HISTORY, $ds)) {
       $row[] = array(
         'class' => 'datastream-versions',
@@ -62,10 +61,9 @@ function islandora_preprocess_islandora_default_edit(array &$variables) {
         )),
       );
     }
-      else {
+    else if (user_access(ISLANDORA_VIEW_DATASTREAM_HISTORY)) {
       $row[] = array();
     }
-    }
     if (islandora_datastream_access(ISLANDORA_VIEW_DATASTREAM_HISTORY, $ds)) {
       // Add new datastream content as the lastest version.
       $row[] = array(