fix clang-tidy warnings (#49)

Signed-off-by: Alexey-N-Chernyshov <[email protected]>

Author: Alexey-N-Chernyshov

core/vm/actor/actor.hpp

@@ -18,7 +18,7 @@ namespace fc::vm::actor {
   struct Actor {
     ContentIdentifier code;
     ContentIdentifier head;
-    uint64_t nonce;
+    uint64_t nonce{};
     BigInt balance;
   };
 

test/testutil/storage/base_leveldb_test.cpp

@@ -7,6 +7,9 @@
 
 namespace test {
 
+  BaseLevelDB_Test::BaseLevelDB_Test(const fs::path &path)
+      : BaseFS_Test(path) {}
+
   void BaseLevelDB_Test::open() {
     leveldb::Options options;
     options.create_if_missing = true;
@@ -20,9 +23,6 @@ namespace test {
     ASSERT_TRUE(db_) << "BaseLevelDB_Test: db is nullptr";
   }
 
-  BaseLevelDB_Test::BaseLevelDB_Test(fs::path path)
-      : BaseFS_Test(std::move(path)) {}
-
   void BaseLevelDB_Test::SetUp() {
     open();
   }

test/testutil/storage/base_leveldb_test.hpp

@@ -15,7 +15,7 @@ namespace test {
   struct BaseLevelDB_Test : public BaseFS_Test {
     using LevelDB = fc::storage::LevelDB;
 
-    BaseLevelDB_Test(fs::path path);
+    explicit BaseLevelDB_Test(const fs::path &path);
 
     void open();