pamhyr: Fix execution without argument.

src/pamhyr.py

@@ -72,8 +72,9 @@ def main():
     legal_info()
 
     if len(sys.argv) > 1:
-        # Run a script
         script = sys.argv[1]
+    else:
+        script = "gui"
 
     if script == "help":
         ret = usage(sys.argv)
@@ -102,9 +103,6 @@ def main():
         ret = application.run()
         if ret != 0:
             application.usage()
-    else:
-        # No args, run Pamhyr2 interface
-        ret = gui(app, conf)
 
     display_timers()
     sys.exit(ret)