Bugfix

* libmailutils/cfg/gocs.c (mu_gocs_register): Avoid registering
same capability twice.

@@ -252,11 +252,15 @@ mu_gocs_register (const char *capa, mu_gocs_init_fp init)
 {
 {
   int i;
   int i;
   for (i = 0; _gocs_table[i].name; i++)
   for (i = 0; _gocs_table[i].name; i++)
+    {
       if (i == MAX_GOCS-1)
       if (i == MAX_GOCS-1)
 	{
 	{
 	  mu_error (_("gocs table overflow"));
 	  mu_error (_("gocs table overflow"));
 	  abort ();
 	  abort ();
 	}
 	}
+      else if (strcmp (_gocs_table[i].name, capa) == 0)
+	return;
+    }
   _gocs_table[i].name = capa;
   _gocs_table[i].name = capa;
   _gocs_table[i].init = init;
   _gocs_table[i].init = init;
 }
 }