Fix another cgo pointer check in xpc_darwin #6
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This is another place that causes the error: panic: runtime error: cgo argument has Go pointer to Go pointer Reference the rules here: golang/go#12416 Passing a pointer to a slice is seen as passing a Go pointer to C where the Go memory the pointer points to contains another Go pointer. Slices fall into this category. Passing a pointer to the first element in a slice is fair game, however.
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This is another place that causes the error:
panic: runtime error: cgo argument has Go pointer to Go pointer
Reference the rules here: golang/go#12416
Passing a pointer to a slice is seen as passing a Go pointer to C where the Go memory the pointer points to contains another Go pointer. Slices fall into this category. Passing a pointer to the first element in a slice is fair game, however.