MFC: r207461
MFC: r207461

  sparc64, and possibly other architectures, pads the length of the
  section holding the config file to sh_addralign bytes using NULs.
  This bogusly triggers an assert.  Break out of the loop when we hit an
  NUL within that many bytes of the end.

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase