dsound/tests: Don't perform ALAW test on secondary buffers.

dlls/dsound/tests/dsound.c

@@ -1391,6 +1391,7 @@ static void perform_invalid_fmt_tests(const char *testname, IDirectSound *dso, I
     ok(wfx.nAvgBytesPerSec == 44100 * 4 + 1, "%s: avgbytes: %u\n", testname, wfx.nAvgBytesPerSec);
     IDirectSoundBuffer_Release(got_buf);
 
+    if(buf){
         wfx.wFormatTag = WAVE_FORMAT_ALAW;
         wfx.nChannels = 2;
         wfx.nSamplesPerSec = 44100;
@@ -1398,7 +1399,7 @@ static void perform_invalid_fmt_tests(const char *testname, IDirectSound *dso, I
         wfx.nBlockAlign = wfx.nChannels * wfx.wBitsPerSample / 8;
         wfx.nAvgBytesPerSec = wfx.nSamplesPerSec * wfx.nBlockAlign;
         rc = do_invalid_fmt_test(dso, buf, &wfx, &got_buf);
-    ok(buf ? rc == S_OK : (rc == E_NOTIMPL || rc == DSERR_INVALIDCALL /* winxp */), "%s: SetFormat: %08x\n", testname, rc);
+        ok(rc == S_OK, "%s: SetFormat: %08x\n", testname, rc);
 
         if(got_buf){
             rc = IDirectSoundBuffer_GetFormat(got_buf, &wfx, sizeof(wfx), NULL);
@@ -1411,6 +1412,7 @@ static void perform_invalid_fmt_tests(const char *testname, IDirectSound *dso, I
             ok(wfx.nAvgBytesPerSec == 44100 * 4, "%s: avgbytes: %u\n", testname, wfx.nAvgBytesPerSec);
             IDirectSoundBuffer_Release(got_buf);
         }
+    }
 
     if(!gotdx8){
         win_skip("Not doing the WAVE_FORMAT_EXTENSIBLE tests\n");