scm_ui: Don't exit, Use CWD.

src/bin/edi_scm_main.c

@@ -82,7 +82,7 @@ int main(int argc, char **argv)
           root = arg;
      }
 
-   if (!root) usage();
+   if (!root) root = getcwd(NULL, 0);
 
    ecore_init();
    elm_init(argc, argv);

src/bin/edi_scm_ui.c

@@ -612,7 +612,7 @@ static Eina_Bool
 _edi_scm_ui_log_fill_cb(void *data)
 {
    Edi_Scm_Engine *engine;
-   Evas_Object *entry, *scr;
+   Evas_Object *entry;
    Eina_List *log;
    char *line;