Change the implementation of utf8_validate

Thanks to Markus Kuhn for this code. The old implementation was not
foolproof.

1 files changed, 2 insertions, 2 deletions

diff --git a/utf8.h b/utf8.h
index a43d5af..855a3c8 100644
--- a/utf8.h
+++ b/utf8.h
@@ -42,8 +42,8 @@ cptoutf8(char * utf8_str, uint32_t c);
 int
 utf8_interpret(char * s, langinfo_t * langinfo, char sc);
 
-int
-utf8_validate(const char * str, size_t length);
+unsigned char *
+utf8_validate(unsigned char * str);
 
 char *
 utf8_prev(const char * str, const char * p);