Fix captcha height

Change-Id: I72643e7922e44f8b951e63cf173b45076f5bbb2d
diff --git a/captcha.php b/captcha.php
index 49ae8a1..51143f7 100644
--- a/captcha.php
+++ b/captcha.php
@@ -17,8 +17,8 @@
         $phraseBuilder = new PhraseBuilder($CAPTCHA_LENGTH);
         $builder = new CaptchaBuilder(null, $phraseBuilder);
         $builder->setDistortion(1);
-        if (isset($SIMPLECAPTCHA) && $SIMPLECAPTCHA) $builder->build(250, 40);
-        else  $builder->buildAgainstOCR(250, 40);
+        if (isset($SIMPLECAPTCHA) && $SIMPLECAPTCHA) $builder->build(250, 80);
+        else  $builder->buildAgainstOCR(250, 80);
         $_SESSION['captcha'] = $builder->getPhrase();
         $builder->output();
 //} else echo "huh?";