Fix minor unit test memory leaks

Rebased-from: 5d8c41f7b5eb1a103290f8c935127addeb781f73 0.8.x

src/test/miner_tests.cpp

@@ -82,6 +82,7 @@ BOOST_AUTO_TEST_CASE(CreateNewBlock_validity)
 
     // Just to make sure we can still make simple blocks
     BOOST_CHECK(pblocktemplate = CreateNewBlockWithKey(reservekey));
+    delete pblocktemplate;
 
     // block sigops > limit: 1000 CHECKMULTISIG + 1
     tx.vin.resize(1);
@@ -199,6 +200,9 @@ BOOST_AUTO_TEST_CASE(CreateNewBlock_validity)
     BOOST_CHECK(pblocktemplate = CreateNewBlockWithKey(reservekey));
     delete pblocktemplate;
     pindexBest->nHeight = nHeight;
+
+    BOOST_FOREACH(CTransaction *tx, txFirst)
+        delete tx;
 }
 
 BOOST_AUTO_TEST_CASE(sha256transform_equality)

src/test/wallet_tests.cpp

@@ -289,6 +289,7 @@ BOOST_AUTO_TEST_CASE(coin_selection_tests)
             BOOST_CHECK_NE(fails, RANDOM_REPEATS);
         }
     }
+    empty_wallet();
 }
 
 BOOST_AUTO_TEST_SUITE_END()