patch 8.1.0535: increment/decrement might get interrupted by updating folds

Problem:    Increment/decrement might get interrupted by updating folds.
Solution:   Disable fold updating for a moment. (Christian Brabandt,
            closes #3599)

src/version.c

@@ -792,6 +792,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    535,
 /**/
     534,
 /**/