cmake HAVE__CLOSE examples

MiKTeX/miktex CMakeLists.txt :1331 

check_function_exists(pclose HAVE_PCLOSE)

nih-at/libzip CMakeLists.txt :102 

check_function_exists(_close HAVE__CLOSE)

flyinghead/flycast core/deps/libzip/CMakeLists.txt :95 

check_function_exists(_close HAVE__CLOSE)