Update invalid_txs.py

Author: ComputerCraftr

test/functional/data/invalid_txs.py

@@ -117,8 +117,8 @@ def get_tx(self):
 # tree depth commitment (CVE-2017-12842)
 class SizeTooSmall(BadTxTemplate):
     reject_reason = "tx-size-small"
-    expect_disconnect = False
-    valid_in_block = True
+    expect_disconnect = True
+    valid_in_block = False
 
     def get_tx(self):
         tx = CTransaction()