Replace all uses of &foo[] with &foo[..] en masse.

src/librustdoc/html/highlight.rs

@@ -34,7 +34,7 @@ pub fn highlight(src: &str, class: Option<&str>, id: Option<&str>) -> String {
          class,
          id,
          &mut out).unwrap();
-    String::from_utf8_lossy(&out[]).into_owned()
+    String::from_utf8_lossy(&out[..]).into_owned()
 }
 
 /// Exhausts the `lexer` writing the output into `out`.