[issue38617] Using Py_XINCREF to replace Py_INCREF in PyAST_CompileObject

[Serhiy Storchaka]

Serhiy Storchaka <storchaka+cpython at gmail.com> added the comment:

The filename argument must be non-NULL. The code that uses c_filename requires this.

Py_XDECREF in compiler_free() could be replaced with Py_DECREF. But this is too tiny change which does not have significant effect.

Actually both Py_INCREF and Py_XDECREF could be removed.

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nosy: +serhiy.storchaka

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<https://bugs.python.org/issue38617>
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