Handle isPkvmHypervisor when property doesn't exist

Bug: 338362155
Test: atest MicrodroidTests
Test: atest MicrodroidHostTests
Change-Id: Ibfbdc574edc483e87ce14b1e21b2f9cc24715927
diff --git a/tests/hostside/helper/java/com/android/microdroid/test/host/MicrodroidHostTestCaseBase.java b/tests/hostside/helper/java/com/android/microdroid/test/host/MicrodroidHostTestCaseBase.java
index 1fc0f92..70308ef 100644
--- a/tests/hostside/helper/java/com/android/microdroid/test/host/MicrodroidHostTestCaseBase.java
+++ b/tests/hostside/helper/java/com/android/microdroid/test/host/MicrodroidHostTestCaseBase.java
@@ -284,6 +284,6 @@
     }
 
     protected boolean isPkvmHypervisor() throws DeviceNotAvailableException {
-        return getDevice().getProperty("ro.boot.hypervisor.version").equals("kvm.arm-protected");
+        return "kvm.arm-protected".equals(getDevice().getProperty("ro.boot.hypervisor.version"));
     }
 }