Avoid comparision of integers with different signs

src/test/miner_tests.cpp

@@ -123,7 +123,7 @@ 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);
@@ -158,7 +158,7 @@ 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);
 
@@ -193,7 +193,7 @@ 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);
 }