pySim-shell: fix wrong reference to iccid.

It should be self.iccid instead of self._cmd.iccid

Change-Id: Icb7378929187a4fc39a8f1ddbaa18291f16caf79
Related: OS#4963
diff --git a/pySim-shell.py b/pySim-shell.py
index 7f48d58..f1060de 100755
--- a/pySim-shell.py
+++ b/pySim-shell.py
@@ -111,7 +111,7 @@
 			if pin_adm:
 				self.poutput("found ADM-PIN '%s' for ICCID '%s'" % (result, self.iccid))
 			else:
-				self.poutput("cannot find ADM-PIN for ICCID '%s'" % (self._cmd.iccid))
+				self.poutput("cannot find ADM-PIN for ICCID '%s'" % (self.iccid))
 				return
 
 		if pin_adm: