Report merge failure code from SnapshotMergeReported. am: 906f9c3a22 am: c52e3d8d5f

Original change: https://android-review.googlesource.com/c/platform/system/update_engine/+/1682079

Change-Id: Ie10b263f50bfc68155ee5551ed1b064a75a032cb
diff --git a/aosp/cleanup_previous_update_action.cc b/aosp/cleanup_previous_update_action.cc
index a902eaf..dde6b89 100644
--- a/aosp/cleanup_previous_update_action.cc
+++ b/aosp/cleanup_previous_update_action.cc
@@ -493,7 +493,8 @@
                              report.total_cow_size_bytes(),
                              report.estimated_cow_size_bytes(),
                              report.boot_complete_time_ms(),
-                             report.boot_complete_to_merge_start_time_ms());
+                             report.boot_complete_to_merge_start_time_ms(),
+                             static_cast<int32_t>(report.merge_failure_code()));
 #endif
 }