patch 8.2.1051: crash when changing a list while using reduce() on it

Problem:    Crash when changing a list while using reduce() on it.
Solution:   Lock the list. (closes #6330)

src/version.c

@@ -754,6 +754,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1051,
 /**/
     1050,
 /**/