reg/tests: Check for elevated privileges before cleaning up the Windows 3.1 test…

programs/reg/tests/reg.c

@@ -4204,14 +4204,11 @@ static void test_import_31(void)
 {
     LONG err;
     HKEY hkey;
-    DWORD r;
-
-    err = RegDeleteKeyA(HKEY_CLASSES_ROOT, KEY_BASE);
-    ok(err == ERROR_SUCCESS || err == ERROR_FILE_NOT_FOUND, "RegDeleteKeyA failed: %d\n", err);
+    DWORD dispos, r;
 
     /* Check if reg.exe is running with elevated privileges */
     err = RegCreateKeyExA(HKEY_CLASSES_ROOT, KEY_BASE, 0, NULL, REG_OPTION_NON_VOLATILE,
-                          KEY_READ|KEY_SET_VALUE, NULL, &hkey, NULL);
+                          KEY_READ|KEY_SET_VALUE, NULL, &hkey, &dispos);
     if (err == ERROR_ACCESS_DENIED)
     {
         win_skip("reg.exe is not running with elevated privileges; "
@@ -4219,6 +4216,9 @@ static void test_import_31(void)
         return;
     }
 
+    if (dispos == REG_OPENED_EXISTING_KEY)
+        delete_value(hkey, NULL);
+
     /* Test simple value */
     test_import_str("REGEDIT\r\n"
                     "HKEY_CLASSES_ROOT\\" KEY_BASE " = Value0\r\n", &r);