usp10: Fix a few failing tests and make them pass on Wine.

dlls/usp10/tests/usp10.c

@@ -498,7 +498,7 @@ static void test_ScriptTextOut(HDC hdc)
             hr = ScriptTextOut(hdc, &psc, 0, 0, 0, NULL, &pItem[0].a, NULL, 0, pwOutGlyphs1, pcGlyphs,
                                piAdvance, NULL, pGoffset);
             ok (hr == 0, "ScriptTextOut should return 0 not (%08x)\n", hr);
-            ok (psc != NULL, "psc should not be null and have SCRIPT_CACHE buffer address\n");
+            ok (psc == NULL, "psc should be null\n");
 
             /* Test Rect Rgn is acceptable */
             rect.top = 10;
@@ -508,7 +508,7 @@ static void test_ScriptTextOut(HDC hdc)
             hr = ScriptTextOut(hdc, &psc, 0, 0, 0, &rect, &pItem[0].a, NULL, 0, pwOutGlyphs1, pcGlyphs,
                                piAdvance, NULL, pGoffset);
             ok (hr == 0, "ScriptTextOut should return 0 not (%08x)\n", hr);
-            ok (psc != NULL, "psc should not be null and have SCRIPT_CACHE buffer address\n");
+            ok (psc == NULL, "psc should be null\n");
 
             iCP = 1;
             hr = ScriptCPtoX(iCP, fTrailing, cChars, pcGlyphs, (const WORD *) &pwLogClust,
@@ -953,7 +953,9 @@ static void test_ScriptStringXtoCP_CPtoX(HDC hdc)
         /*
          * ScriptStringCPtoX should free ssa, hence ScriptStringFree should fail
          */
-        ok(hr == E_INVALIDARG, "ScriptStringFree should return E_INVALIDARG not %08x\n", hr);
+        ok(hr == E_INVALIDARG ||
+           hr == E_FAIL, /* win2k3 */
+           "ScriptStringFree should return E_INVALIDARG or E_FAIL not %08x\n", hr);
     }
 }
 

dlls/usp10/usp10.c

@@ -1413,7 +1413,7 @@ HRESULT WINAPI ScriptTextOut(const HDC hdc, SCRIPT_CACHE *psc, int x, int y, UIN
          hdc, psc, x, y, fuOptions, lprc, psa, pwcReserved, iReserved, pwGlyphs, cGlyphs,
          piAdvance, piJustify, pGoffset);
 
-    if (!hdc && psc && !*psc) return E_INVALIDARG;
+    if (!hdc || !psc) return E_INVALIDARG;
     if (!piAdvance || !psa || !pwGlyphs) return E_INVALIDARG;
 
     fuOptions &= ETO_CLIPPED + ETO_OPAQUE;