fix another graph issue

Author: iakovenkos

barretenberg/cpp/src/barretenberg/boomerang_value_detection/graph.cpp

@@ -682,7 +682,7 @@ template <typename FF, typename CircuitBuilder> void StaticAnalyzer_<FF, Circuit
             };
             auto non_empty_count =
                 std::count_if(all_cc.begin(), all_cc.end(), [](const auto& vec) { return !vec.empty(); });
-            BB_ASSERT(non_empty_count < 2U);
+            BB_ASSERT(non_empty_count < 2);
             auto not_empty_cc_it =
                 std::find_if(all_cc.begin(), all_cc.end(), [](const auto& vec) { return !vec.empty(); });
             if (not_empty_cc_it != all_cc.end() && connect_variables) {