cmd/goyacc: merge variable declaration with assignment

Found with honnef.co/go/tools/cmd/simple.

Change-Id: I04c65394f1c6404f57bb2088353325899f35011f
Reviewed-on: https://go-review.googlesource.com/38177
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
1 file changed