send-email: don't call methods on undefined values

diff --git a/wt-status.h b/wt-status.h
index 4121bc208db2fbe5e4eb00af10056a9d8c0bab40..fb7152e187a2fe7c080aab1d84b7fd2cbe6c47a1 100644 (file)
--- a/wt-status.h
+++ b/wt-status.h
@@ -96,9 +96,9 @@ void wt_status_get_state(struct wt_status_state *state, int get_detached_from);
 void wt_shortstatus_print(struct wt_status *s);
 void wt_porcelain_print(struct wt_status *s);
 
-void status_printf_ln(struct wt_status *s, const char *color, const char *fmt, ...)
-       ;
-void status_printf(struct wt_status *s, const char *color, const char *fmt, ...)
-       ;
+__attribute__((format (printf, 3, 4)))
+void status_printf_ln(struct wt_status *s, const char *color, const char *fmt, ...);
+__attribute__((format (printf, 3, 4)))
+void status_printf(struct wt_status *s, const char *color, const char *fmt, ...);
 
 #endif /* STATUS_H */