[Ada] Fix PR ada/92362

[Eric Botcazou]

This is a regression present on mainline and 9 branch: the expression of an 
Address aspect is elaborated twice (if it has side effects) because of a silly 
mistake made in an ealier change.

Tested on x86_64-suse-linux, applied on the mainline and 9 branch.


2019-11-25  Eric Botcazou  <ebotcazou@adacore.com>

	PR ada/92362
	* gcc-interface/trans.c (gnat_to_gnu) <N_Attribute_Definition_Clause>:
	Use a temporary instead of clobbering the result with a freeze node.


2019-11-25  Eric Botcazou  <ebotcazou@adacore.com>

	* gnat.dg/addr14.adb: New test.

-- 
Eric Botcazou
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