From de8d9a720a6cee65bce83bcb2928fc02829a92ed Mon Sep 17 00:00:00 2001
From: Daniel Imms <daimms@microsoft.com>
Date: Sat, 25 May 2019 21:17:36 -0700
Subject: [PATCH] Fix NPE in reflow

See microsoft/vscode#72149
---
 src/Buffer.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Buffer.ts b/src/Buffer.ts
index 37d61d88..686e0a38 100644
--- a/src/Buffer.ts
+++ b/src/Buffer.ts
@@ -294,7 +294,7 @@ export class Buffer implements IBuffer {
     for (let y = this.lines.length - 1; y >= 0; y--) {
       // Check whether this line is a problem
       let nextLine = this.lines.get(y) as BufferLine;
-      if (!nextLine.isWrapped && nextLine.getTrimmedLength() <= newCols) {
+      if (!nextLine || !nextLine.isWrapped && nextLine.getTrimmedLength() <= newCols) {
         continue;
       }