libsnapshot: Fix DataWipeAfterRollback test

Test: run it
Bug: 152094219
Change-Id: I06852d7a0514481cbeed3ef66192ba49a24cb54b
(cherry picked from commit a4f9b07490998a90a0ce1ef7f241145ac279b2af)
Merged-In: I06852d7a0514481cbeed3ef66192ba49a24cb54b
diff --git a/fs_mgr/libsnapshot/snapshot_test.cpp b/fs_mgr/libsnapshot/snapshot_test.cpp
index 855451d..fdcde52 100644
--- a/fs_mgr/libsnapshot/snapshot_test.cpp
+++ b/fs_mgr/libsnapshot/snapshot_test.cpp
@@ -1498,7 +1498,7 @@
     ASSERT_TRUE(new_sm->HandleImminentDataWipe());
     EXPECT_EQ(new_sm->GetUpdateState(), UpdateState::None);
     EXPECT_FALSE(test_device->IsSlotUnbootable(0));
-    EXPECT_FALSE(test_device->IsSlotUnbootable(0));
+    EXPECT_FALSE(test_device->IsSlotUnbootable(1));
 }
 
 TEST_F(SnapshotUpdateTest, Hashtree) {