Bug#830741: mrpt: FTBFS on sparc64: TopographyReconstructPathFrom3RTK bus error

[Aaron M. Ucko]

Source: mrpt
Version: 1:1.4.0-3
Severity: important
Justification: fails to build from source

Thanks for fixing the sparc64 mrpt compilation error!  Alas, the build
still fails, this time with a test suite error:

  [ RUN      ] TopographyReconstructPathFrom3RTK.sampleDataset
  Bus error

Could you please take a look?  ("Bus error" typically indicates
insufficiently aligned data.)

Thanks!