[I] [Go] the output is not passed to emitResult in scalarExecutor.executeSpans which may cause the function execute result is wrong [arrow-go]

["bigwhite (via GitHub)" <gi...@apache.org>]

bigwhite opened a new issue, #52:
URL: https://github.com/apache/arrow-go/issues/52

   ### Describe the bug, including details regarding any error messages, version, and platform.
   
   When I read the code in executor.go， I found a maybe problem:
   
   ![image](https://github.com/apache/arrow-go/assets/419088/462851b3-8a46-4ff1-bbc2-3da3c4d8f9e1)
   
   initially, output is a copy of prealloc. After some operation to output, the output may be different to prealloc, e.g. some slice header. (BufferSpan.Buf)
   
   The code may pass the output to emitResult rather than the prealloc.
   
   I'm not sure this is a real problem because I've no test case to produce the problem.
   
   ### Component(s)
   
   Go


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