patch 8.2.0031: MS-Windows: test for empty job fails

Problem:    MS-Windows: test for empty job fails
Solution:   Check for error message, make it also fail on Unix.
diff --git a/src/version.c b/src/version.c
index 9dbfd6f..7e9f4a5 100644
--- a/src/version.c
+++ b/src/version.c
@@ -743,6 +743,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    31,
+/**/
     30,
 /**/
     29,