patch 7.4.1850
Problem:    GUI freezes when using a job. (Shougo)
Solution:   Unregister the channel when there is an input error.
diff --git a/src/version.c b/src/version.c
index 2a259a5..80793f1 100644
--- a/src/version.c
+++ b/src/version.c
@@ -754,6 +754,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1850,
+/**/
     1849,
 /**/
     1848,