cmd/compile: eliminate a Curfn reference in plive
cmd/compile: eliminate a Curfn reference in plive

I think this got lost in a rebase somewhere.

Updates #15756

Change-Id: Ia3e7c60d1b9254f2877217073732b46c91059ade
Reviewed-on: https://go-review.googlesource.com/38425
Run-TryBot: Josh Bleecher Snyder <cdc248cc4d32e4fbfe04e45228163bcecd48a0b9@gmail.com>
Reviewed-by: Matthew Dempsky <e56ac2c500064424afac424d4b5e53bd0570a731@google.com>
TryBot-Result: Gobot Gobot <66cb808b70d30c07676d5e946fee83fd561249e5@golang.org>

golang/go,ImJasonH/go,nawawi/go,akutz/go,Cofyc/go,linux-on-ibm-z/go,josharian/go,codestation/go,CAFxX/go,cloudflare/go,akutz/go,Cofyc/go,vsekhar/elastic-go,cloudflare/go,akutz/go,CAFxX/go,nawawi/go,CAFxX/go,CAFxX/go,polyverse-security/go,linux-on-ibm-z/go,josharian/go,golang/go,vsekhar/elastic-go,akutz/go,nawawi/go,golang/go,linux-on-ibm-z/go,CAFxX/go,golang/go,akutz/go,cloudflare/go,polyverse-security/go,ImJasonH/go,codestation/go,linux-on-ibm-z/go,golang/go,codestation/go,ImJasonH/go,josharian/go,Cofyc/go,linux-on-ibm-z/go,Cofyc/go,codestation/go,nawawi/go,derekmarcotte/go,nawawi/go,Cofyc/go,golang/go,cloudflare/go,derekmarcotte/go,akutz/go,josharian/go,akutz/go,josharian/go,nawawi/go,ImJasonH/go,ImJasonH/go,polyverse-security/go,golang/go,polyverse-security/go,polyverse-security/go,CAFxX/go,derekmarcotte/go,codestation/go,linux-on-ibm-z/go,josharian/go,josharian/go,linux-on-ibm-z/go,vsekhar/elastic-go,vsekhar/elastic-go,ImJasonH/go,linux-on-ibm-z/go,Cofyc/go,vsekhar/elastic-go,derekmarcotte/go,derekmarcotte/go,golang/go,Cofyc/go,polyverse-security/go,Cofyc/go,cloudflare/go,cloudflare/go,polyverse-security/go,derekmarcotte/go,polyverse-security/go,codestation/go,cloudflare/go,christopher-henderson/Go,ImJasonH/go,codestation/go,CAFxX/go,codestation/go,vsekhar/elastic-go,josharian/go,vsekhar/elastic-go,akutz/go,nawawi/go,cloudflare/go,derekmarcotte/go,vsekhar/elastic-go,nawawi/go,derekmarcotte/go,ImJasonH/go,CAFxX/go