Automatic code cleanup.

PiperOrigin-RevId: 454266408
Change-Id: Ic03047cb9498994456ce7bc56e53a1b3e5424840
diff --git a/src/test/java/com/google/devtools/build/lib/windows/MockSubprocess.java b/src/test/java/com/google/devtools/build/lib/windows/MockSubprocess.java
index 540162c..5d5d8e2 100644
--- a/src/test/java/com/google/devtools/build/lib/windows/MockSubprocess.java
+++ b/src/test/java/com/google/devtools/build/lib/windows/MockSubprocess.java
@@ -107,6 +107,7 @@
 
         case 'X':
           System.exit(Integer.parseInt(arg.substring(1)));
+        default: // fall out
       }
     }
   }