fix building with clang

fix error that is given because of macro overlapping cgit_filter member:

../filter.c:388:10: error: no member named '__fprintf_chk' in
'struct cgit_filter'
  388 |         filter->fprintf(filter, f, prefix);
      |         ~~~~~~  ^
/usr/include/bits/stdio2.h:92:3: note: expanded from macro 'fprintf'
   92 |   __fprintf_chk (stream, __USE_FORTIFY_LEVEL - 1, __VA_ARGS__)
      |   ^
1 error generated.

Signed-off-by: Denis Pronin <dannftk@yandex.ru>
Signed-off-by: Christian Hesse <mail@eworm.de>

1 file changed, 1 insertion, 1 deletion

diff --git a/cgit.h b/cgit.h
index dbc461f..e0d286d 100644
--- a/cgit.h
+++ b/cgit.h
@@ -69,7 +69,7 @@ typedef enum {
 struct cgit_filter {
 	int (*open)(struct cgit_filter *, va_list ap);
 	int (*close)(struct cgit_filter *);
-	void (*fprintf)(struct cgit_filter *, FILE *, const char *prefix);
+	void (*fprintfp)(struct cgit_filter *, FILE *, const char *prefix);
 	void (*cleanup)(struct cgit_filter *);
 	int argument_count;
 };