qa: Avoid UTXO reuse between test functions

diff --git a/test/functional/p2p_compactblocks.py b/test/functional/p2p_compactblocks.py
index 99f1e5fa..73c50664 100755
--- a/test/functional/p2p_compactblocks.py
+++ b/test/functional/p2p_compactblocks.py
@@ -167,18 +167,19 @@ class CompactBlocksTest(BitcoinTestFramework):
         block.solve()
         return block
 
-    # Create 10 more anyone-can-spend utxo's for testing.
+    # Create 12 more anyone-can-spend utxo's for testing.
     def make_utxos(self):
+        COUNT = 12
         block = self.build_block_on_tip(self.nodes[0])
         self.segwit_node.send_and_ping(msg_no_witness_block(block))
         assert_equal(self.nodes[0].getbestblockhash(), block.hash_hex)
         self.generate(self.wallet, COINBASE_MATURITY)
 
         total_value = block.vtx[0].vout[0].nValue
-        out_value = total_value // 10
+        out_value = total_value // COUNT
         tx = CTransaction()
         tx.vin.append(CTxIn(COutPoint(block.vtx[0].txid_int, 0), b''))
-        for _ in range(10):
+        for _ in range(COUNT):
             tx.vout.append(CTxOut(out_value, CScript([OP_TRUE])))
 
         block2 = self.build_block_on_tip(self.nodes[0])
@@ -187,7 +188,7 @@ class CompactBlocksTest(BitcoinTestFramework):
         block2.solve()
         self.segwit_node.send_and_ping(msg_no_witness_block(block2))
         assert_equal(self.nodes[0].getbestblockhash(), block2.hash_hex)
-        self.utxos.extend([[tx.txid_int, i, out_value] for i in range(10)])
+        self.utxos.extend([[tx.txid_int, i, out_value] for i in range(COUNT)])
 
     def announce_cmpct_block(self, node, peer, txn_count=5, solicit=False):
         utxo = self.utxos.pop(0)
@@ -600,7 +601,7 @@ class CompactBlocksTest(BitcoinTestFramework):
     # Multiple blocktxn responses will cause a node to get disconnected.
     def test_multiple_blocktxn_response(self, test_node):
         node = self.nodes[0]
-        utxo = self.utxos[0]
+        utxo = self.utxos.pop(0)
 
         block = self.build_block_with_transactions(node, utxo, 2)
 
@@ -781,8 +782,7 @@ class CompactBlocksTest(BitcoinTestFramework):
     # but invalid transactions.
     def test_invalid_tx_in_compactblock(self, test_node):
         node = self.nodes[0]
-        assert len(self.utxos)
-        utxo = self.utxos[0]
+        utxo = self.utxos.pop(0)
 
         block = self.build_block_with_transactions(node, utxo, 5)
         block.hashMerkleRoot = block.calc_merkle_root()
@@ -849,7 +849,6 @@ class CompactBlocksTest(BitcoinTestFramework):
 
     def test_compactblock_reconstruction_stalling_peer(self, stalling_peer, delivery_peer):
         node = self.nodes[0]
-        assert len(self.utxos)
 
         self.make_peer_hb_to_candidate(node, delivery_peer)
         block, cmpct_block = self.announce_cmpct_block(node, stalling_peer)
@@ -923,7 +922,6 @@ class CompactBlocksTest(BitcoinTestFramework):
             can only be taken by an outbound node unless prior attempts were done by an outbound
         """
         node = self.nodes[0]
-        assert len(self.utxos)
 
         for name, peer in [("delivery", delivery_peer), ("inbound", inbound_peer), ("outbound", outbound_peer)]:
             self.log.info(f"Setting {name} as high bandwidth peer")