[nautilus-sendto] main: Fix warnings when no mail client is installed

[Bastien Nocera <hadess src gnome org>]

commit 1db4d7bd362f9f80ee0c493f56838e5322623262
Author: Bastien Nocera <hadess hadess net>
Date:   Thu Jun 13 17:07:14 2013 +0200

    main: Fix warnings when no mail client is installed
    
    https://bugzilla.gnome.org/show_bug.cgi?id=701654

 src/nautilus-sendto.c |   13 +++++++++++--
 1 files changed, 11 insertions(+), 2 deletions(-)
---
diff --git a/src/nautilus-sendto.c b/src/nautilus-sendto.c
index 83a544c..586efee 100644
--- a/src/nautilus-sendto.c
+++ b/src/nautilus-sendto.c
@@ -72,7 +72,7 @@ get_evo_cmd (void)
        return retval;
 }
 
-static void
+static gboolean
 init_mailer (NautilusSendto *nst)
 {
        GAppInfo *app_info;
@@ -113,11 +113,16 @@ init_mailer (NautilusSendto *nst)
                        nst->type = MAILER_EVO;
        }
 
+       if (nst->mail_cmd == NULL)
+               return FALSE;
+
        /* Replace %U by %s */
        while ((needle = g_strrstr (nst->mail_cmd, "%U")) != NULL)
                needle[1] = 's';
        while ((needle = g_strrstr (nst->mail_cmd, "%u")) != NULL)
                needle[1] = 's';
+
+       return TRUE;
 }
 
 static char *
@@ -515,7 +520,11 @@ int main (int argc, char **argv)
 
        nst = g_new0 (NautilusSendto, 1);
        nautilus_sendto_init (nst);
-       init_mailer (nst);
+       if (!init_mailer (nst)) {
+               g_print (_("No mail client installed, not sending files\n"));
+               goto out;
+       }
+
 
        if (nst->file_list == NULL) {
                g_print (_("Expects URIs or filenames to be passed as options\n"));