From cd9b3e10fd93e5b8a34db619f6a1ece97a1bd4b7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mart=C3=ADn=20Fern=C3=A1ndez?=
 <975883+pazos@users.noreply.github.com>
Date: Sun, 27 Dec 2020 14:10:06 +0100
Subject: [PATCH] calibre: do not attempt to stop the socket if nil (#7067)

---
 plugins/calibre.koplugin/wireless.lua | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/plugins/calibre.koplugin/wireless.lua b/plugins/calibre.koplugin/wireless.lua
index cfd5b7305..1a3aece1b 100644
--- a/plugins/calibre.koplugin/wireless.lua
+++ b/plugins/calibre.koplugin/wireless.lua
@@ -255,10 +255,14 @@ end
 function CalibreWireless:disconnect()
     logger.info("disconnect from calibre")
     self.connect_message = false
-    self.calibre_socket:stop()
-    UIManager:removeZMQ(self.calibre_messagequeue)
-    self.calibre_socket = nil
-    self.calibre_messagequeue = nil
+    if self.calibre_socket then
+        self.calibre_socket:stop()
+        self.calibre_socket = nil
+    end
+    if self.calibre_messagequeue then
+        UIManager:removeZMQ(self.calibre_messagequeue)
+        self.calibre_messagequeue = nil
+    end
     CalibreMetadata:clean()
 end