Remove the static from int hardlink_check_uid. There is an external use in the opensolaris code.
Remove the static from int hardlink_check_uid.
There is an external use in the opensolaris code.

I am not sure how this ever worked but I have seen two reports of:
	link_elf: symbol hardlink_check_uid undefined
lately.

Reported by:	Scott Ullrich (sullrich gmail.com), pfsense
Reported by:	Mister Olli (mister.olli googlemail.com)

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