go/internal/gccgoimporter: fix test

The typestring for embedded fields in structs was changed
by 8d30bd752d4 (type checking of function type parameters)
but this test was not updated.

Change-Id: I0d9438e3000939de09aa298c33ad1e9604a59fe8

src/go/internal/gccgoimporter/importer_test.go

@@ -95,7 +95,7 @@ var importerTests = [...]importerTest{
 	{pkgpath: "nointerface", name: "I", want: "type I int"},
 	{pkgpath: "issue29198", name: "FooServer", gccgoVersion: 7, want: "type FooServer struct{FooServer *FooServer; user string; ctx context.Context}"},
 	{pkgpath: "issue30628", name: "Apple", want: "type Apple struct{hey sync.RWMutex; x int; RQ [517]struct{Count uintptr; NumBytes uintptr; Last uintptr}}"},
-	{pkgpath: "issue31540", name: "S", gccgoVersion: 7, want: "type S struct{b int; map[Y]Z}"},
+	{pkgpath: "issue31540", name: "S", gccgoVersion: 7, want: "type S struct{b int; A2 /* = map[Y]Z */}"},
 	{pkgpath: "issue34182", name: "T1", want: "type T1 struct{f *T2}"},
 }