test: match gccgo error messages for bug325.go.
test: match gccgo error messages for bug325.go.

bug325.go:13:10: error: invalid indirect of ?unsafe.Pointer?
bug325.go:14:31: error: reference to field ?foo? in object which has no fields or methods

R=golang-dev, r
CC=golang-dev
http://codereview.appspot.com/4313050

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