Cleanup: add proj/internal/mutex.hpp as compat layer for mingw32 for std::mutex#2736

Merged

rouault merged 1 commit intoOSGeo:masterfrom rouault:cleanup_mutex

Jun 2, 2021

+75-62

Commits on Jun 2, 2021

Cleanup: add proj/internal/mutex.hpp as compat layer for mingw32 for std::mutex
rouault
committed