* src/c++11/compatibility-chrono.cc (steady_clock::now()): If
	!_GLIBCXX_USE_GETTIMEOFDAY perform conversion inline instead of
	calling non-existent from_time_t.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@199391 138bc75d-0d04-0410-961f-82ee72b054a4