Avoid two warnings in tools/widl/parser.y (RESEND)

[Gerald Pfeifer]

I verified that this actually fixes the warnings

  parser.y:2327:17: warning: 'container_type_name' may be used 
  uninitialized in this function
  parser.y:2328:17: warning: 'var_type' may be used uninitialize
  in this function

for both GCC 4.2 and the forthcoming GCC 4.5, thus resending.

Gerald

ChangeLog:
Initialize two variables in the default/assert(0) case.

diff --git a/tools/widl/parser.y b/tools/widl/parser.y
index 2af7742..f088f8c 100644
--- a/tools/widl/parser.y
+++ b/tools/widl/parser.y
@@ -2347,6 +2347,7 @@ static void check_field_common(const type_t *container_type,
         break;
     default:
         /* should be no other container types */
+        container_type_name = var_type = NULL;
         assert(0);
     }