2024.11.11.00: Build fails: call to 'clearenv' is ambiguous

[yurivict]

/wrkdirs/usr/ports/devel/folly/work/folly-2024.11.11.00/folly/system/EnvUtil.cpp:50:15: error: call to 'clearenv' is ambiguous
   50 |   PCHECK(0 == clearenv());
      |               ^~~~~~~~
/usr/local/include/glog/logging.h:897:52: note: expanded from macro 'PCHECK'
  897 |   PLOG_IF(FATAL, GOOGLE_PREDICT_BRANCH_NOT_TAKEN(!(condition))) \
      |                                                    ^~~~~~~~~
/usr/local/include/glog/logging.h:170:66: note: expanded from macro 'GOOGLE_PREDICT_BRANCH_NOT_TAKEN'
  170 | #    define GOOGLE_PREDICT_BRANCH_NOT_TAKEN(x) (__builtin_expect(x, 0))
      |                                                                  ^
/usr/local/include/glog/logging.h:889:9: note: expanded from macro 'PLOG_IF'
  889 |       !(condition)                   \
      |         ^~~~~~~~~
/usr/include/stdlib.h:285:6: note: candidate function
  285 | int      clearenv(void);
      |          ^
/wrkdirs/usr/ports/devel/folly/work/folly-2024.11.11.00/folly/portability/Stdlib.h:61:5: note: candidate function
   61 | int clearenv();
      |     ^ 
12 warnings and 1 error generated.

clang-18
FreeBSD 14.1

[yurivict]

Fix: #2338