libsnapshot: Fix test UpdateBootControlHal

Test: run it
Change-Id: I885404184f35a8d6ecb2fe267bd48b25f1164e20
diff --git a/fs_mgr/libsnapshot/snapshot_test.cpp b/fs_mgr/libsnapshot/snapshot_test.cpp
index 8783526..b52bcf1 100644
--- a/fs_mgr/libsnapshot/snapshot_test.cpp
+++ b/fs_mgr/libsnapshot/snapshot_test.cpp
@@ -575,7 +575,7 @@
     ASSERT_EQ(test_device->merge_status(), MergeStatus::NONE);
 
     ASSERT_TRUE(sm->WriteUpdateState(lock_.get(), UpdateState::Initiated));
-    ASSERT_EQ(test_device->merge_status(), MergeStatus::SNAPSHOTTED);
+    ASSERT_EQ(test_device->merge_status(), MergeStatus::NONE);
 
     ASSERT_TRUE(sm->WriteUpdateState(lock_.get(), UpdateState::Unverified));
     ASSERT_EQ(test_device->merge_status(), MergeStatus::SNAPSHOTTED);