Merge "Don't pass non-const refs." am: 2fe71c70ab am: 993922983d am: 188f50587a

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/1949796

Change-Id: Ieea012855260f65111d25c9d32a5f92e5dcfaeb8
diff --git a/tests/mts/bpf_existence_test.cpp b/tests/mts/bpf_existence_test.cpp
index ac8096c..142e013 100644
--- a/tests/mts/bpf_existence_test.cpp
+++ b/tests/mts/bpf_existence_test.cpp
@@ -92,7 +92,7 @@
     a->insert(b.begin(), b.end());
 }
 
-void removeAll(set<string>* a, const set<string> b) {
+void removeAll(set<string>* a, const set<string>& b) {
     for (const auto& toRemove : b) {
         a->erase(toRemove);
     }