bytes: correct message in test log
bytes: correct message in test log

Change-Id: Ib731874b9a37ff141e4305d8ccfdf7c165155da6
Reviewed-on: https://go-review.googlesource.com/64930
Reviewed-by: Ian Lance Taylor <87e9c6d529889242b7e184afb632328636553ab4@golang.org>

CAFxX/go,Cofyc/go,Cofyc/go,christopher-henderson/Go,nawawi/go,josharian/go,codestation/go,polyverse-security/go,josharian/go,nawawi/go,akutz/go,golang/go,cloudflare/go,akutz/go,golang/go,golang/go,Cofyc/go,Cofyc/go,codestation/go,akutz/go,CAFxX/go,josharian/go,akutz/go,polyverse-security/go,CAFxX/go,josharian/go,akutz/go,nawawi/go,polyverse-security/go,polyverse-security/go,codestation/go,golang/go,golang/go,cloudflare/go,nawawi/go,polyverse-security/go,Cofyc/go,CAFxX/go,CAFxX/go,cloudflare/go,josharian/go,polyverse-security/go,polyverse-security/go,CAFxX/go,cloudflare/go,CAFxX/go,CAFxX/go,nawawi/go,akutz/go,codestation/go,cloudflare/go,cloudflare/go,Cofyc/go,cloudflare/go,akutz/go,polyverse-security/go,codestation/go,codestation/go,nawawi/go,Cofyc/go,josharian/go,golang/go,codestation/go,codestation/go,nawawi/go,cloudflare/go,Cofyc/go,akutz/go,golang/go,nawawi/go,josharian/go,golang/go,josharian/go