From f686c209896e7e51d994af6b5c0243179ac76939 Mon Sep 17 00:00:00 2001
From: Alan Knowles <alan@roojs.com>
Date: Mon, 29 Aug 2016 16:35:53 +0800
Subject: [PATCH] Spawn.vala

---
 Spawn.vala | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Spawn.vala b/Spawn.vala
index 08032c19..a25c2da2 100644
--- a/Spawn.vala
+++ b/Spawn.vala
@@ -426,7 +426,9 @@ public class Spawn : Object
     {
         string prop = (ch == this.out_ch) ? "output" : "stderr";
        // print("prop: " + prop);
-
+        if (this.pid < 0) {
+            return; // spawn complete + closed... can't read any more.
+        }
         
         //print(JSON.stringify(ch, null,4));
         while (true) {
-- 
2.39.2