fix syntax error in upload_of... add types to file_wrong_type lang message.

application/lang/en/validation.php

@@ -45,7 +45,7 @@ return array(
 	|--------------------------------------------------------------------------
 	*/
 
-	"file_wrong_type" => "The :attribute is an invalid file type.",
+	"file_wrong_type" => "The :attribute must be a file of type: :types.",
 	"file_too_big" => "The :attribute exceeds size limit of :maxkb.",
 
 );

system/validation/rules/upload_of.php

@@ -106,7 +106,7 @@ class Upload_Of extends Nullable_Rule {
 	 */
 	public function is_image()
 	{
-		$this->types = array_merge($this->types, array('jpg', 'gif', 'png', 'bmp'))
+		$this->types = array_merge($this->types, array('jpg', 'gif', 'png', 'bmp'));
 		return $this;
 	}