Preventing dir creation failure if the output dir already exists (RC). Fixes issue 6704

Author: barancev

java/server/src/org/openqa/selenium/server/SeleniumServer.java

@@ -624,7 +624,8 @@ protected void runHtmlSuite() {
       HTMLLauncher launcher = new HTMLLauncher(this);
       String resultFilePath = getRequiredSystemProperty("htmlSuite.resultFilePath");
       File resultFile = new File(resultFilePath);
-      if (! resultFile.getParentFile().mkdirs()) {
+      File resultDir = resultFile.getParentFile();
+      if (!resultDir.exists() && !resultDir.mkdirs()) {
         RemoteControlLauncher.usage("can't create directory for result file " + resultFilePath);
         System.exit(1);
       }