Tweak to comments to conform to style guide.
diff --git a/system/helpers/download_helper.php b/system/helpers/download_helper.php
index 18fe962..8b87f81 100644
--- a/system/helpers/download_helper.php
+++ b/system/helpers/download_helper.php
@@ -101,7 +101,7 @@
 			$filename = implode('.', $x);
 		}
 		
-		//Clean output buffer
+		// Clean output buffer
 		ob_clean();
 
 		// Generate the server headers