[Ada] Minor adjustment to implementation of 'Min/'Max

[Eric Botcazou]

We don't need the C99-like treatment if we don't expect NaN's.

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


2015-05-26  Eric Botcazou  <ebotcazou@adacore.com>

	* gcc-interface/trans.c (Attribute_to_gnu) <Attr_Min/Attr_Max>: Do not
	bother about NaN's if Machine_Overflows is true.


-- 
Eric Botcazou
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