BUG: fix reference counting bug in __array_interface__ implementation… #27266
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…numpy#27249) * BUG: fix reference counting bug in __array_interface__ implementation * MAINT: only decref if the reference is valid
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Backport of #27249.
@seberg ran into this testing
cunumeric: https://github.com/numpy/numpy/pull/26282/files#r1722321473.Unfortunately there are no existing tests for this code path so we missed this breakage.
I tried writing an example that triggered this code path for a while this afternoon but was unable to.
BUG: fix reference counting bug in array_interface implementation
MAINT: only decref if the reference is valid