Avoid calls to strlen in font processing functions.

* font.c (font_parse_name, font_parse_xlfd, font_parse_fcname)
(font_open_by_name): Changed to use length argument.  Adjust
users accordingly.
* font.h (font_open_by_name, font_parse_xlfd): Adjust prototypes.
* xfont.c (xfont_decode_coding_xlfd): Changed to return ptrdiff_t.
(xfont_list_pattern, xfont_match): Use length returned by
xfont_decode_coding_xlfd.
* xfns.c (x_default_font_parameter): Omit useless xstrdup.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/fontset.c b/src/fontset.c
index 056ef31e4f1..3397502a2fd 100644
--- a/src/fontset.c
+++ b/src/fontset.c
@@ -1646,7 +1646,7 @@ FONT-SPEC is a vector, a cons, or a string.  See the documentation of
       char xlfd[256];
       int len;
 
-      if (font_parse_xlfd (SSDATA (name), font_spec) < 0)
+      if (font_parse_xlfd (SSDATA (name), SBYTES (name), font_spec) < 0)
         error ("Fontset name must be in XLFD format");
       short_name = AREF (font_spec, FONT_REGISTRY_INDEX);
       if (strncmp (SSDATA (SYMBOL_NAME (short_name)), "fontset-", 8)