Merge bitcoin#21228: test: Avoid comparision of integers with different signs

bedb8d8 Avoid comparision of integers with different signs (Jonas Schnelli)

Pull request description:

  Fixes an integer comparison of different signs (which errors out on `-Werror,-Wsign-compare`). Introduced in bitcoin#21121.

  See https://bitcoinbuilds.org/index.php?ansilog=982c61cf-6969-4001-bebc-dc215e5d29a4.log

ACKs for top commit:
  MarcoFalke:
    review ACK bedb8d8
  amitiuttarwar:
    ACK bedb8d8
  vasild:
    ACK bedb8d8

Tree-SHA512: cb22a6239a1fc9d0be5573bf6ae4ec379eb7398c88edc8fa2ae4fd721f37f9ca3724896c1ac16de14a5286888a0b631813da32cb62d177ffbf9b2c31e716a7aa

Author: fanquake

src/test/miner_tests.cpp

@@ -137,7 +137,7 @@ void MinerTestingSetup::TestPackageSelection(const CChainParams& chainparams, co
     m_node.mempool->addUnchecked(entry.Fee(50000).Time(GetTime()).SpendsCoinbase(false).FromTx(tx));
 
     std::unique_ptr<CBlockTemplate> pblocktemplate = AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey);
-    BOOST_REQUIRE_EQUAL(pblocktemplate->block.vtx.size(), 4);
+    BOOST_REQUIRE_EQUAL(pblocktemplate->block.vtx.size(), 4U);
     BOOST_CHECK(pblocktemplate->block.vtx[1]->GetHash() == hashParentTx);
     BOOST_CHECK(pblocktemplate->block.vtx[2]->GetHash() == hashHighFeeTx);
     BOOST_CHECK(pblocktemplate->block.vtx[3]->GetHash() == hashMediumFeeTx);
@@ -172,7 +172,7 @@ void MinerTestingSetup::TestPackageSelection(const CChainParams& chainparams, co
     hashLowFeeTx = tx.GetHash();
     m_node.mempool->addUnchecked(entry.Fee(feeToUse+2).FromTx(tx));
     pblocktemplate = AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey);
-    BOOST_REQUIRE_EQUAL(pblocktemplate->block.vtx.size(), 6);
+    BOOST_REQUIRE_EQUAL(pblocktemplate->block.vtx.size(), 6U);
     BOOST_CHECK(pblocktemplate->block.vtx[4]->GetHash() == hashFreeTx);
     BOOST_CHECK(pblocktemplate->block.vtx[5]->GetHash() == hashLowFeeTx);
 
@@ -207,7 +207,7 @@ void MinerTestingSetup::TestPackageSelection(const CChainParams& chainparams, co
     tx.vout[0].nValue = 100000000 - 10000; // 10k satoshi fee
     m_node.mempool->addUnchecked(entry.Fee(10000).FromTx(tx));
     pblocktemplate = AssemblerForTest(chainparams).CreateNewBlock(scriptPubKey);
-    BOOST_REQUIRE_EQUAL(pblocktemplate->block.vtx.size(), 9);
+    BOOST_REQUIRE_EQUAL(pblocktemplate->block.vtx.size(), 9U);
     BOOST_CHECK(pblocktemplate->block.vtx[8]->GetHash() == hashLowFeeTx2);
 }