defaultPassthroughServiceImplementation errors am: 03416d957a am: 9c1f3199b8
am: bb6c3a3ba1

Change-Id: I8bf8d44e16f78dff4073bcd7ae78bc7923da6c3e
diff --git a/transport/include/hidl/LegacySupport.h b/transport/include/hidl/LegacySupport.h
index 2f0c3f3..f03d34d 100644
--- a/transport/include/hidl/LegacySupport.h
+++ b/transport/include/hidl/LegacySupport.h
@@ -74,7 +74,7 @@
     }
 
     joinRpcThreadpool();
-    return 0;
+    return UNKNOWN_ERROR;
 }
 template<class Interface>
 __attribute__((warn_unused_result))