message: IterateValue: Use ReadScalar instead of unportable reinterpret_casts
  This fixes the testcase MiniReflectFlatBuffersTest.
diff: @@ -122,58 +122,58 @@ inline void IterateValue(ElementaryType type, const uint8_t *val,
  soffset_t vector_index, IterationVisitor *visitor) {
  switch (type) {
  case ET_UTYPE: {
  - auto tval = *reinterpret_cast<const uint8_t *>(val);
  + auto tval = ReadScalar<uint8_t>(val);
  visitor->UType(tval, EnumName(tval, type_table));
  break;
  }
  case ET_BOOL: {
  - visitor->Bool(*reinterpret_cast<const uint8_t *>(val) != 0);
  + visitor->Bool(ReadScalar<uint8_t>(val) != 0);
  break;
  }
  case ET_CHAR: {
  - auto tval = *reinterpret_cast<const int8_t *>(val);
  + auto tval = ReadScalar<int8_t>(val);
  visitor->Char(tval, EnumName(tval, type_table));
  break;
  }
  case ET_UCHAR: {
  - auto tval = *reinterpret_cast<const uint8_t *>(val);
  + auto tval = ReadScalar<uint8_t>(val);
  visitor->UChar(tval, EnumName(tval, type_table));
  break;
  }
  case ET_SHORT: {
  - auto tval = *reinterpret_cast<const int16_t *>(val);
  + auto tval = ReadScalar<int16_t>(val);
  visitor->Short(tval, EnumName(tval, type_table));
  break;
  }
  case ET_USHORT: {
  - auto tval = *reinterpret_cast<const uint16_t *>(val);
  + auto tval = ReadScalar<uint16_t>(val);
  visitor->UShort(tval, EnumName(tval, type_table));
  break;
  }
  case ET_INT: {
  - auto tval = *reinterpret_cast<const int32_t *>(val);
  + auto tval = ReadScalar<int32_t>(val);
  visitor->Int(tval, EnumName(tval, type_table));
  break;
  }
  case ET_UINT: {
  - auto tval = *reinterpret_cast<const uint32_t *>(val);
  + auto tval = ReadScalar<uint32_t>(val);
  visitor->UInt(tval, EnumName(tval, type_table));
  break;
  }
  case ET_LONG: {
  - visitor->Long(*reinterpret_cast<const int64_t *>(val));
  + visitor->Long(ReadScalar<int64_t>(val));
  break;
  }
  case ET_ULONG: {
  - visitor->ULong(*reinterpret_cast<const uint64_t *>(val));
  + visitor->ULong(ReadScalar<uint64_t>(val));
  break;
  }
  case ET_FLOAT: {
  - visitor->Float(*reinterpret_cast<const float *>(val));
  + visitor->Float(ReadScalar<float>(val));
  break;
  }
  case ET_DOUBLE: {
  - visitor->Double(*reinterpret_cast<const double *>(val));
  + visitor->Double(ReadScalar<double>(val));
  break;
  }
  case ET_STRING: {
  