Changed new_cow_size var type to auto to prevent overflow. am: d4806f80d8

Original change: https://android-review.googlesource.com/c/platform/system/update_engine/+/2364279

Change-Id: I78c816b102287ff8a1ad4f7b1859ba75c62e09dc
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/payload_consumer/delta_performer.cc b/payload_consumer/delta_performer.cc
index 5754cae..367dedc 100644
--- a/payload_consumer/delta_performer.cc
+++ b/payload_consumer/delta_performer.cc
@@ -474,7 +474,7 @@
       manifest_.mutable_dynamic_partition_metadata()
           ->set_vabc_compression_param("none");
       for (auto& partition : *manifest_.mutable_partitions()) {
-        int new_cow_size = partition.new_partition_info().size();
+        auto new_cow_size = partition.new_partition_info().size();
         for (const auto& operation : partition.merge_operations()) {
           if (operation.type() == CowMergeOperation::COW_COPY) {
             new_cow_size -=