win32: optimize mp_vfprintf a little

- remove redundant strlen/wcslen
- reuse allocated temporary buffers

The difference is not big, but it satisfies me to remove those
redundancies.

1 files changed, 1 insertions, 1 deletions

diff --git a/test/test_utils.c b/test/test_utils.c
index 7e5f2e6ce7..1673ef97ba 100644
--- a/test/test_utils.c
+++ b/test/test_utils.c
@@ -107,7 +107,7 @@ void mp_msg(struct mp_log *log, int lev, const char *format, ...) {};
 int mp_msg_find_level(const char *s) {return 0;};
 int mp_msg_level(struct mp_log *log) {return 0;};
 void mp_msg_set_max_level(struct mp_log *log, int lev) {};
-void mp_write_console_ansi(void *wstream, char *buf) {};
+int mp_write_console_ansi(void *wstream, const char *format, va_list args) {return 0;};
 bool mp_check_console(void *handle) { return false; };
 void mp_set_avdict(AVDictionary **dict, char **kv) {};
 struct mp_log *mp_log_new(void *talloc_ctx, struct mp_log *parent,