dir.c (check_dirname): avoid volatile, use return value

volatile is unnecessary since we use rb_sys_fail_path nowadays
and that prevents the path argument from being GC-ed.
Using a return value instead of modifying the argument directly
simplifies the generated code (on 32-bit x86):

 text    data     bss     dec     hex filename
20744      40      20   20804    5144 dir.o-orig
20720      40      20   20780    512c dir.o

* dir.c (check_dirname): avoid volatile, use return value
  (dir_s_chroot, dir_s_mkdir, dir_s_rmdir): adjust callers

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51000 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

0 files changed, 0 insertions, 0 deletions