Report merge failure code from SnapshotMergeReported.

Bug: 185290850
Test: statsd_testdrive
Change-Id: I743ca357225140635aae7a0b77338d35e64298da
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
 }