Fix tree checking failure with -fdump-ada-spec

[Eric Botcazou]

We forget to check that something is a TYPE before using TYPE_METHODS.

Tested on i586-suse-linux, applied on the mainline as obvious.


2011-03-22  Eric Botcazou  <ebotcazou@adacore.com>

	* c-ada-spec.c (dump_ada_template): Skip non-class instances.


-- 
Eric Botcazou
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