extern void smtp_vprintf(const char *, BOOL, va_list);
#define string_sprintf(fmt, ...) \
- string_sprintf_trc(fmt, US __FUNCTION__, __LINE__ __VA_OPT__(,) __VA_ARGS__)
+ string_sprintf_trc(fmt, US __FUNCTION__, __LINE__, __VA_ARGS__)
extern uschar *string_sprintf_trc(const char *, const uschar *, unsigned, ...) ALMOST_PRINTF(1,4);
#ifdef LOCAL_SCAN