Fix segfault on double typedef for enum with -fdump-ada-spec

[Eric Botcazou]

This happens with the C++ compiler only.

Tested on x86_64-suse-linux, applied on the mainline.


2016-11-13  Eric Botcazou  <ebotcazou@adacore.com>

c-family/
	* c-ada-spec.c (print_ada_declaration): For typedef declarations, look
	for nested types only if the type is a record or union and dump SLOC.


2016-11-13  Eric Botcazou  <ebotcazou@adacore.com>

	* c-c++-common/dump-ada-spec-6.c: New test.

-- 
Eric Botcazou
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