`ignore_send_records=False` not respected by C++ parser

[gschnabel]

The following sequence of ENDF section end markers is invalid:

 2.000000+7 4.047687-2                                             325 3105   52
 0.000000+0 0.000000+0          0          0          0          0 325 3  099999
 0.000000+0 0.000000+0          0          0          0          0 325 0  0    0

Parsing should therefore fail if ignore_send_records=False. While the Python parser fails as expected, the C++ parser still parses such a file without failing.