Fixed returns but hitting lifetime issue

src/renderer/renderer.rs

@@ -130,7 +130,7 @@ impl<'a> DustRenderer<'a> {
                         };
                     } else {
                         match container.contents {
-                            None => Ok("".to_owned()),
+                            None => return Ok("".to_owned()),
                             Some(body) => {
                                 let rendered_results: Result<Vec<String>, RenderError> =
                                     loop_elements
@@ -141,7 +141,6 @@ impl<'a> DustRenderer<'a> {
                                 return Ok(rendered_slice.join(""));
                             }
                         };
-                        return Ok("".to_owned());
                     }
                 }
             }