[njs] Fixed various clang static analyzer warnings.

[Dmitry Volyntsev]

details: http://hg.nginx.org/njs/rev/2b18ef4e86d1
branches:
changeset: 659:2b18ef4e86d1
user: Dmitry Volyntsev <***@nginx.com>
date: Mon Nov 19 16:30:35 2018 +0300
description:
Fixed various clang static analyzer warnings.

In njs_object_keys_array() function.

diffstat:

njs/njs_object.c | 20 ++------------------
1 files changed, 2 insertions(+), 18 deletions(-)

diffs (39 lines):

diff -r 76e139b439ad -r 2b18ef4e86d1 njs/njs_object.c
--- a/njs/njs_object.c Thu Nov 15 20:31:35 2018 +0300
+++ b/njs/njs_object.c Mon Nov 19 16:30:35 2018 +0300
@@ -959,33 +959,17 @@ njs_object_keys_array(njs_vm_t *vm, cons

n = 0;

- switch (value->type) {
- case NJS_ARRAY:
+ if (array != NULL) {
for (i = 0; i < length; i++) {
if (njs_is_valid(&array->start[i])) {
njs_uint32_to_string(&keys->start[n++], i);
}
}

- break;
-
- case NJS_STRING:
- case NJS_OBJECT_STRING:
- if (value->type == NJS_OBJECT_STRING) {
- string = &value->data.u.object_value->value;
-
- } else {
- string = (njs_value_t *) value;
- }
-
+ } else if (length != 0) {
for (i = 0; i < length; i++) {
njs_uint32_to_string(&keys->start[n++], i);
}
-
- break;
-
- default:
- break;
}

if (nxt_fast_path(hash != NULL)) {