scripted-diff: [test] Use g_rng/m_rng directly

-BEGIN VERIFY SCRIPT-

 # Use m_rng in unit test files
 ren() { sed -i "s:\<$1\>:$2:g" $( git grep -l "$1" src/test/*.cpp src/wallet/test/*.cpp src/test/util/setup_common.cpp ) ; }
 ren InsecureRand32                m_rng.rand32
 ren InsecureRand256               m_rng.rand256
 ren InsecureRandBits              m_rng.randbits
 ren InsecureRandRange             m_rng.randrange
 ren InsecureRandBool              m_rng.randbool
 ren g_insecure_rand_ctx           m_rng
 ren g_insecure_rand_ctx_temp_path g_rng_temp_path

-END VERIFY SCRIPT-

src/wallet/test/wallet_crypto_tests.cpp

@@ -83,7 +83,7 @@ BOOST_AUTO_TEST_CASE(passphrase) {
     std::string hash(GetRandHash().ToString());
     std::vector<unsigned char> vchSalt(8);
     GetRandBytes(vchSalt);
-    uint32_t rounds = InsecureRand32();
+    uint32_t rounds = m_rng.rand32();
     if (rounds > 30000)
         rounds = 30000;
     TestCrypter::TestPassphrase(vchSalt, SecureString(hash.begin(), hash.end()), rounds);

src/wallet/test/wallet_tests.cpp

@@ -945,7 +945,7 @@ BOOST_FIXTURE_TEST_CASE(wallet_sync_tx_invalid_state_test, TestingSetup)
 
     CMutableTransaction mtx;
     mtx.vout.emplace_back(COIN, GetScriptForDestination(op_dest));
-    mtx.vin.emplace_back(Txid::FromUint256(g_insecure_rand_ctx.rand256()), 0);
+    mtx.vin.emplace_back(Txid::FromUint256(m_rng.rand256()), 0);
     const auto& tx_id_to_spend = wallet.AddToWallet(MakeTransactionRef(mtx), TxStateInMempool{})->GetHash();
 
     {