Port: Catch errors due to "Restricted" selection. #2905

from 2a47dfd8ba724b17f5bc5f9214bea8ce8b469398

src/Posting/QR.js

@@ -383,6 +383,7 @@ var QR = {
     postRange.selectNode(root);
     let text = post.board.ID === g.BOARD.ID ? `>>${post}\n` : `>>>/${post.board}/${post}\n`;
     for (let i = 0, end = sel.rangeCount, asc = 0 <= end; asc ? i < end : i > end; asc ? i++ : i--) {
+      try {
         var insideCode, node;
         range = sel.getRangeAt(i);
         // Trim range to be fully inside post
@@ -421,6 +422,7 @@ var QR = {
           $.rm(node);
         }
         text += `>${frag.textContent.trim()}\n`;
+      } catch (error) { }
     }
 
     QR.openPost();