The existing code used to produce an empty output in situations where a
TLV_IE_Collection would be parsed from a single TLV only with some
additional trailing padding:
>>> from pySim.utils import h2b
>>> from pySim.ts_31_102 import EF_CSGT
>>> t = EF_CSGT.Csgt_TLV_Collection()
>>> t.from_tlv(h2b('8906810300666f6fff'))
[TextCsgType(foo)]
>>> t.to_dict()
[]
This was caused by an early return (actually returning the decoded
result) but *without updating self.children*.
Change-Id: I1c84ccf698c6ff7e7f14242f9aaf7d15ac2239f4
69bdcf5022