MDL-20406 improved param validation

mod/wiki/ewiki/ewiki.php

@@ -1271,7 +1271,7 @@ function ewiki_page_info($id, &$data, $action) {
             $value = preg_replace_callback("/((\w+:)?([".EWIKI_CHARS_U."]+[".EWIKI_CHARS_L."]+){2,}[\w\d]*)/", "ewiki_link_regex_callback", $value);
          }
          elseif ($i == "userid") {
-             $i = 'author';
+             $i = 'author';
              if ($user = get_record('user', 'id', (int)$value)) {
                  if (!isset($course->id)) {
                      $course->id = 1;

mod/wiki/ewiki/plugins/moodle/downloads.php

@@ -345,7 +345,7 @@ function ewiki_entry_downloads($row, $show_section=0, $fullinfo=false) {
    $info->comment = format_text($p_comment);
 
    if ($fullinfo) {
-        if ($user = get_record('user', 'id', $row['userid'])) {
+        if ($user = get_record('user', 'id', (int)$row['userid'])) {
             if (!isset($course->id)) {
                 $course->id = 1;
             }