Avoid extra calls to strlen in filesystem I/O routines.

* fileio.c (Fexpand_file_name): Avoid calls to strlen if
the length of 'newdir' is known or may be precalculated.
(file_accessible_directory_p): Prefer to pass Lisp_Object,
not 'char *', and so use precalculated length.
(Ffile_accessible_directory_p):
* callproc.c (encode_current_directory, init_callproc):
* charset.c (init_charset):
* lread.c (load_path_check, load_path_default): Adjust users.
* lisp.h (file_accessible_directory_p): Tweak prototype.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/charset.c b/src/charset.c
index 341ac356aff..6964208137b 100644
--- a/src/charset.c
+++ b/src/charset.c
@@ -2298,7 +2298,7 @@ init_charset (void)
 {
   Lisp_Object tempdir;
   tempdir = Fexpand_file_name (build_string ("charsets"), Vdata_directory);
-  if (! file_accessible_directory_p (SSDATA (tempdir)))
+  if (! file_accessible_directory_p (tempdir))
     {
       /* This used to be non-fatal (dir_warning), but it should not
          happen, and if it does sooner or later it will cause some