json: add NULL check for container on get_container
In case the caller just wants to check an object is iterable, without actually iterating it.
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@ -393,7 +393,8 @@ bool json_iter_get_container(struct json_iter *iter,
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if (t->type != JSMN_OBJECT && t->type != JSMN_ARRAY)
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return false;
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iter_recurse(iter, t, container);
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if (container)
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iter_recurse(iter, t, container);
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return true;
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}
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