patch 8.2.0424: checking for wrong return value

Problem:    Checking for wrong return value. (Tom)
Solution:   Invert the check and fix the test.
diff --git a/src/version.c b/src/version.c
index 198c42a..166c1d4 100644
--- a/src/version.c
+++ b/src/version.c
@@ -739,6 +739,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    424,
+/**/
     423,
 /**/
     422,