Pass a non-empty run-time argument in test.

The windows execution silently removes the empty string argument
resulting in different behavior than on linux.

Change-Id: I71a99dc1ff2696d64fb901ac94fe4e3eac4bc01a
diff --git a/src/test/java/com/android/tools/r8/dex/whitespaceinidentifiers/WhiteSpaceInIdentifiersTest.java b/src/test/java/com/android/tools/r8/dex/whitespaceinidentifiers/WhiteSpaceInIdentifiersTest.java
index 0dc670b..1fad1ab 100644
--- a/src/test/java/com/android/tools/r8/dex/whitespaceinidentifiers/WhiteSpaceInIdentifiersTest.java
+++ b/src/test/java/com/android/tools/r8/dex/whitespaceinidentifiers/WhiteSpaceInIdentifiersTest.java
@@ -216,7 +216,7 @@
     parameters.assumeCfRuntime();
     testForJvm()
         .addProgramClassFileData(getTransformed())
-        .run(parameters.asCfRuntime(), TestClass.class, "")
+        .run(parameters.asCfRuntime(), TestClass.class, "some-argument")
         .assertFailureWithErrorThatThrows(RuntimeException.class)
         .inspectOriginalStackTrace(
             stackTrace ->