message: [XLA] Slightly improve a CHECK-fail message.
diff: @@ -75,7 +75,7 @@ void BufferAllocation::AddAssignment(const LogicalBuffer& buffer, int64 offset,
  CHECK_LE(offset + size, size_)
  << "LogicalBuffer " << buffer << " size out of range";
  CHECK_EQ(buffer.color(), color())
  - << "Buffer color " << buffer.color()
  + << "Buffer color " << buffer.color() << " for buffer " << buffer
  << " does not match allocation color " << color() << ".";
  OffsetSize offset_size;
  offset_size.offset = offset;
  