patch 8.2.0424: checking for wrong return value

Problem:    Checking for wrong return value. (Tom)
Solution:   Invert the check and fix the test.

src/version.c

@@ -738,6 +738,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    424,
 /**/
     423,
 /**/