Move the globals comments in bidi.js and metadata.js to after the Copyright comments

Author: Snuffleupagus

src/core/bidi.js

@@ -1,4 +1,3 @@
-/* globals PDFJS */
 /* Copyright 2012 Mozilla Foundation
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -13,6 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+/* globals PDFJS */
 
 'use strict';
 

src/display/metadata.js

@@ -1,4 +1,3 @@
-/* globals Document, error, PDFJS */
 /* Copyright 2012 Mozilla Foundation
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -13,6 +12,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+/* globals Document, error, PDFJS */
 
 'use strict';