Created attachment 246482 [details] [review]
Avoid repeating the self encryption key in cryptui_key_chooser_get_recipients()

tool/seahorse-tool.c:prompt_recipients() contains the following test:

                if (gerr == 0 && num != keys->len)
                    g_warning ("couldn't load all the keys (%d/%d) from GPGME", keys->len, num);

This assumes that cryptui_prompt_recipients() will not return any duplicated recipients. Unfortunately, it can currently happen when the key selected
with the "always encrypt to self" option is also selected in the recipient list.

The attached patch modifies cryptui_key_chooser_get_recipients() to skip
adding the key twice.

This is also related to:
https://bugzilla.gnome.org/show_bug.cgi?id=415268