Use defined for PYBIND11_HAS_OPTIONAL, PYBIND11_HAS_EXP_OPTIONAL, PYBIND11_HAS_VARIANT#2476

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henryiii merged 1 commit intopybind:masterfrom

cirosantilli2:ifdef

Sep 10, 2020

Commits on Sep 10, 2020

Use defined for some preprocessor variables that might be undefined
cirosantilli2
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