debug/pe: skip a test on windows/arm

It requires a DLL that's not available on windows/arm apparently.

Fixes #27904

Change-Id: I082a273f62976b7184636c6aeca6201a7871d238
Reviewed-on: https://go-review.googlesource.com/c/139720
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Katie Hockman <katie@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

src/debug/pe/file_test.go

@@ -535,7 +535,11 @@ func TestBuildingWindowsGUI(t *testing.T) {
 
 func TestImportTableInUnknownSection(t *testing.T) {
 	if runtime.GOOS != "windows" {
-		t.Skip("skipping windows only test")
+		t.Skip("skipping Windows-only test")
+	}
+	if runtime.GOARCH == "arm" {
+		// Issue 27904
+		t.Skip("skipping test on arm; no atmfd.dll available")
 	}
 
 	// first we need to find this font driver