pySim-shell: do not pass failed card object to PysimApp

When the try block in which we also call init_card() fails, there may be
no card object, so we must not pass the card object to PysimApp in the
except block. This is also no problem, PysimApp will run without the
card object until the user executes do_equip for a second attempt.

Related: OS#6210
Change-Id: I28195f442ce007f05f7610c882bbc4a6520a8ce6
diff --git a/pySim-shell.py b/pySim-shell.py
index 3b6945c..79b4d8b 100755
--- a/pySim-shell.py
+++ b/pySim-shell.py
@@ -1040,7 +1040,7 @@
             " it should also be noted that some readers may behave strangely when no card")
         print(" is inserted.)")
         print("")
-        app = PysimApp(card, None, sl, ch, opts.script)
+        app = PysimApp(None, None, sl, ch, opts.script)
 
     # If the user supplies an ADM PIN at via commandline args authenticate
     # immediately so that the user does not have to use the shell commands