[njs] Fixed njs_date_string().

[Dmitry Volyntsev]

details:   https://hg.nginx.org/njs/rev/3f094214cd64
branches:  
changeset: 1342:3f094214cd64
user:      Dmitry Volyntsev <xeioex at nginx.com>
date:      Fri Feb 28 18:56:24 2020 +0300
description:
Fixed njs_date_string().

This closes #292 issue on Github.

diffstat:

 src/njs_date.c           |  2 +-
 src/test/njs_unit_test.c |  3 +++
 2 files changed, 4 insertions(+), 1 deletions(-)

diffs (25 lines):

diff -r ee5fa0d312df -r 3f094214cd64 src/njs_date.c
--- a/src/njs_date.c	Thu Jan 30 21:14:30 2020 +0800
+++ b/src/njs_date.c	Fri Feb 28 18:56:24 2020 +0300
@@ -1157,7 +1157,7 @@ njs_date_string(njs_vm_t *vm, njs_value_
                                     "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
 
     if (njs_slow_path(isnan(time))) {
-        vm->retval = njs_string_invalid_date;
+        *retval = njs_string_invalid_date;
         return NJS_OK;
     }
 
diff -r ee5fa0d312df -r 3f094214cd64 src/test/njs_unit_test.c
--- a/src/test/njs_unit_test.c	Thu Jan 30 21:14:30 2020 +0800
+++ b/src/test/njs_unit_test.c	Fri Feb 28 18:56:24 2020 +0300
@@ -13270,6 +13270,9 @@ static njs_unit_test_t  njs_test[] =
     { njs_str("new Date(8.65e15)"),
       njs_str("Invalid Date") },
 
+    { njs_str("njs.dump([new Date(8.65e15)])"),
+      njs_str("[Invalid Date]") },
+
     { njs_str("new Date(0e0.o0)"),
       njs_str("Invalid Date") },