mypy

gh-151126: Fix missing `PyErr_NoMemory` in `getpath.c` (#151590) #22017

Job	Run time
Run mypy on Tools/build	21s
Run mypy on Tools/peg_generator	22s
Run mypy on Tools/cases_generator	20s
Run mypy on Lib/_pyrepl	20s
Run mypy on Lib/test/libregrtest	21s
Run mypy on Tools/check-c-api-docs	20s
Run mypy on Lib/tomllib	19s
Run mypy on Tools/clinic	19s
Run mypy on Tools/jit	19s
	3m 1s

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