Compilation of f_ssa was broken by CL 10929.

This CL does not include tests because
I have a work in progress CL that will catch
this and much more.

package p

func f_ssa() string {
	return "ABC"
}

Change-Id: I0ce0e905e4d30ec206cce808da406b9b7f0f38e9
Reviewed-on: https://go-review.googlesource.com/11136Reviewed-by: Keith Randall <khr@golang.org>