patch 8.2.0121: filter() and map() on blob don't work

Problem:    filter() and map() on blob don't work.
Solution:   Correct the code. (closes #5483)

src/version.c

@@ -742,6 +742,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    121,
 /**/
     120,
 /**/