message: fixed duplicate symbol error in flexbuffers.h
  1. modified the function that omitted inline.
  2. changed the static global functions to inline functions.
diff: @@ -161,7 +161,7 @@ inline double ReadDouble(const uint8_t *data, uint8_t byte_width) {
  byte_width);
  }
  -const uint8_t *Indirect(const uint8_t *offset, uint8_t byte_width) {
  +inline const uint8_t *Indirect(const uint8_t *offset, uint8_t byte_width) {
  return offset - ReadUInt64(offset, byte_width);
  }
  @@ -169,7 +169,7 @@ template<typename T> const uint8_t *Indirect(const uint8_t *offset) {
  return offset - flatbuffers::ReadScalar<T>(offset);
  }
  -static BitWidth WidthU(uint64_t u) {
  +inline BitWidth WidthU(uint64_t u) {
  #define FLATBUFFERS_GET_FIELD_BIT_WIDTH(value, width) { \
  if (!((u) & ~((1ULL << (width)) - 1ULL))) return BIT_WIDTH_##width; \
  }
  @@ -180,12 +180,12 @@ static BitWidth WidthU(uint64_t u) {
  return BIT_WIDTH_64;
  }
  -static BitWidth WidthI(int64_t i) {
  +inline BitWidth WidthI(int64_t i) {
  auto u = static_cast<uint64_t>(i) << 1;
  return WidthU(i >= 0 ? u : ~u);
  }
  -static BitWidth WidthF(double f) {
  +inline BitWidth WidthF(double f) {
  return static_cast<double>(static_cast<float>(f)) == f ? BIT_WIDTH_32
  : BIT_WIDTH_64;
  }
  