typo change

Uses the same defaults as were hard coded in (8 chars in length,
0-9a-aA-Z). Small change in this file means less code elsewhere when
generating random character strings for the captcha word. all existing
code will work the same.

system/helpers/captcha_helper.php

@@ -51,7 +51,7 @@
 	 */
 	function create_captcha($data = '', $img_path = '', $img_url = '', $font_path = '')
 	{
-		$defaults = array('word' => '', 'img_path' => '', 'img_url' => '', 'img_width' => '150', 'img_height' => '30', 'font_path' => '', 'expiration' => 7200, 'captcha_word_length' => 8, 'character_pool_for_generted_word' => '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ');
+		$defaults = array('word' => '', 'img_path' => '', 'img_url' => '', 'img_width' => '150', 'img_height' => '30', 'font_path' => '', 'expiration' => 7200, 'captcha_word_length' => 8, 'character_pool_for_generated_word' => '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ');
 
 		foreach ($defaults as $key => $val)
 		{
@@ -107,9 +107,9 @@ function create_captcha($data = '', $img_path = '', $img_url = '', $font_path =
 		if (empty($word))
 		{
 			$word = '';
-			for ($i = 0, $mt_rand_max = strlen($character_pool_for_generted_word) - 1; $i < $captcha_word_length; $i++)
+			for ($i = 0, $mt_rand_max = strlen($character_pool_for_generated_word) - 1; $i < $captcha_word_length; $i++)
 			{
-				$word .= $character_pool_for_generted_word[mt_rand(0, $mt_rand_max)];
+				$word .= $character_pool_for_generated_word[mt_rand(0, $mt_rand_max)];
 			}
 		}
 		elseif ( ! is_string($word))