[njs] Fixed "PROP NEXT" instruction.

[Dmitry Volyntsev]

details:   https://hg.nginx.org/njs/rev/a7ca9fc28b0b
branches:  
changeset: 1362:a7ca9fc28b0b
user:      Dmitry Volyntsev <xeioex at nginx.com>
date:      Mon Mar 23 19:52:02 2020 +0300
description:
Fixed "PROP NEXT" instruction.

The proper way to access array's elements is "start" field whereas
"data" is an allocation field.  While currently they are numerically
indentical it may change in the future.

diffstat:

 src/njs_vmcode.c |  2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diffs (12 lines):

diff -r 603a21fabf8d -r a7ca9fc28b0b src/njs_vmcode.c
--- a/src/njs_vmcode.c	Mon Mar 23 17:15:46 2020 +0300
+++ b/src/njs_vmcode.c	Mon Mar 23 19:52:02 2020 +0300
@@ -788,7 +788,7 @@ next:
                 next = value2->data.u.next;
 
                 if (next->index < next->array->length) {
-                    *retval = next->array->data[next->index++];
+                    *retval = next->array->start[next->index++];
 
                     ret = pnext->offset;
                     break;