Fix a mismatch between signed and unsigned chars

1 files changed, 2 insertions, 2 deletions

diff --git a/utf8.h b/utf8.h
index 855a3c8..0ee1e01 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);
 
-unsigned char *
-utf8_validate(unsigned char * str);
+char *
+utf8_validate(char * str);
 
 char *
 utf8_prev(const char * str, const char * p);