patch 8.2.1962: netbeans may access freed memory

Problem:    Netbeans may access freed memory.
Solution:   Check the buffer pointer is still valid.  Add a test. (Yegappan
            Lakshmanan, closes #7248)

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1962,
 /**/
     1961,
 /**/