secfree opened a new pull request, #456:
URL: https://github.com/apache/arrow-go/pull/456
### Rationale for this change
My program crashed with below log
```
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x53beb92]
goroutine 294 [running]:
github.com/apache/arrow-go/v18/arrow/array.(*Data).Release(0xc02586a5b0)
/root/go/pkg/mod/github.com/apache/arrow-go/v18@v18.4.0/arrow/array/data.go:150
+0x172
github.com/apache/arrow-go/v18/arrow/array.concat.func1()
/root/go/pkg/mod/github.com/apache/arrow-go/v18@v18.4.0/arrow/array/concat.go:528
+0x9c
github.com/apache/arrow-go/v18/arrow/array.concat({0xc14ae66008, 0x100,
0x100}, {0x83213c0, 0xb026080})
/root/go/pkg/mod/github.com/apache/arrow-go/v18@v18.4.0/arrow/array/concat.go:652
+0x3f7d
github.com/apache/arrow-go/v18/arrow/array.Concatenate({0xc104861908, 0x100,
0x12f}, {0x83213c0, 0xb026080})
/root/go/pkg/mod/github.com/apache/arrow-go/v18@v18.4.0/arrow/array/concat.go:55
+0x585
...
```
### What changes are included in this PR?
Add nil check in Data.Release() for childData to avoid crash.
### Are these changes tested?
Yes.
### Are there any user-facing changes?
No.
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