[dia/wip/lantw/general-fix-non-literal-format-string-errors] general: fix non-literal format string errors

[Ting-Wei Lan <lantw src gnome org>]

commit bd90d9e35b99e4ddd53f7d996c631e1057780f0e
Author: Ting-Wei Lan <lantw src gnome org>
Date:   Sun May 3 16:11:51 2020 +0800

    general: fix non-literal format string errors
    
    We have to explicitly mark the format string argument with G_GNUC_PRINTF
    to notify Clang that it should not emit the errors here.

 lib/dialib.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/lib/dialib.c b/lib/dialib.c
index a66807fa..56e6895f 100644
--- a/lib/dialib.c
+++ b/lib/dialib.c
@@ -36,6 +36,7 @@
 #include "standard-path.h"
 
 
+G_GNUC_PRINTF(3, 0)
 static void
 stderr_message_internal (const char          *title,
                          enum ShowAgainStyle  showAgain,