shell32: Don't return a path from SHGetKnownFolderPath when it can not be created.

dlls/shell32/shellpath.c

@@ -4970,7 +4970,7 @@ HRESULT WINAPI SHGetKnownFolderPath(REFKNOWNFOLDERID rfid, DWORD flags, HANDLE t
     if (!(flags & KF_FLAG_CREATE))
     {
         hr = HRESULT_FROM_WIN32(ERROR_PATH_NOT_FOUND);
-        goto done;
+        goto failed;
     }
 
     /* create directory/directories */

dlls/shell32/tests/shellpath.c

@@ -1875,7 +1875,10 @@ if (0) { /* crashes */
         path = NULL;
         hr = pSHGetKnownFolderPath(folder_id, KF_FLAG_DEFAULT, NULL, &path);
         if (FAILED(hr))
+        {
+            ok(path == NULL, "expected path == NULL\n");
             continue;
+        }
         ok(hr == S_OK, "expected S_OK, got 0x%08x\n", hr);
         ok(path != NULL, "expected path != NULL\n");