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diff -up dbus-1.1.2/bus/bus.c.foo dbus-1.1.2/bus/bus.c
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--- dbus-1.1.2/bus/bus.c.foo	2007-09-14 15:26:08.000000000 -0400
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+++ dbus-1.1.2/bus/bus.c	2007-09-14 15:26:08.000000000 -0400
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@@ -1206,7 +1206,7 @@ bus_context_check_security_policy (BusCo
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 				    dest ? dest : DBUS_SERVICE_DBUS, error))
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         {
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-	  if (dbus_error_is_set (error) &&
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+	  if (error != NULL && dbus_error_is_set (error) &&
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 	      dbus_error_has_name (error, DBUS_ERROR_NO_MEMORY))
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 	    {
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 	      return FALSE;