utf8.h: use the FORMAT_PRINTF macro to declare the gcc function attribute 'format printf'

Use the new FORMAT_PRINTF macro (in git-compat-util.h) to declare the gcc function
attribute 'format printf'

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/utf8.h b/utf8.h
index 7930b44f19..fb4a176016 100644
--- a/utf8.h
+++ b/utf8.h
@@ -10,7 +10,7 @@ int utf8_strwidth(const char *string);
 int is_utf8(const char *text);
 int is_encoding_utf8(const char *name);
 int same_encoding(const char *, const char *);
-__attribute__((format (printf, 2, 3)))
+FORMAT_PRINTF(2, 3)
 int utf8_fprintf(FILE *, const char *, ...);
 
 extern const char utf8_bom[];