fixes double hashes in share links

public/src/forum/topic.js

@@ -484,7 +484,7 @@ define(['composer', 'forum/pagination'], function(composer, pagination) {
 
 		$('#post-container').on('shown.bs.dropdown', '.share-dropdown', function() {
 			var pid = $(this).parents('.post-row').attr('data-pid');
-			$('#post_' + pid + '_link').val(window.location.href + "#" + pid);
+			$('#post_' + pid + '_link').val(window.location.protocol + '//' + window.location.host + window.location.pathname + '#' + pid);
 			// without the setTimeout can't select the text in the input
 			setTimeout(function() {
 				$('#post_' + pid + '_link').putCursorAtEnd().select();