chore: remove repetitive words

doc/developer-notes.md

@@ -264,7 +264,7 @@ General C++
 
 - Assertions should not have side-effects
 
- - *Rationale*: Even though the source code is set to to refuse to compile
+ - *Rationale*: Even though the source code is set to refuse to compile
  with assertions disabled, having side-effects in assertions is unexpected and
  makes the code harder to understand
 

qa/rpc-tests/auxpow.py

@@ -61,7 +61,7 @@ def run_test(self):
  raise ex
  self.sync_all()
 
- # 5. mine blocks until we're in in auxpow era
+ # 5. mine blocks until we're in auxpow era
  self.nodes[1].generate(self.AUXPOW_START - self.DIGISHIELD_START)
  self.sync_all()
 

qa/rpc-tests/test_framework/mininode.py

@@ -63,7 +63,7 @@
 
 # One lock for synchronizing all data access between the networking thread (see
 # NetworkThread below) and the thread running the test logic. For simplicity,
-# NodeConn acquires this lock whenever delivering a message to to a NodeConnCB,
+# NodeConn acquires this lock whenever delivering a message to a NodeConnCB,
 # and whenever adding anything to the send buffer (in send_message()). This
 # lock should be acquired in the thread running the test logic to synchronize
 # access to any data shared with the NodeConnCB or NodeConn.

src/qt/walletmodel.cpp

@@ -342,7 +342,7 @@ WalletModel::SendCoinsReturn WalletModel::sendCoins(WalletModelTransaction &tran
  transaction_array.append(&(ssTx[0]), ssTx.size());
  }
 
- // Add addresses / update labels that we've sent to to the address book,
+ // Add addresses / update labels that we've sent to the address book,
  // and emit coinsSent signal for each recipient
  Q_FOREACH(const SendCoinsRecipient &rcp, transaction.getRecipients())
  {

src/secp256k1/src/secp256k1.c

@@ -482,7 +482,7 @@ static int secp256k1_ecdsa_sign_inner(const secp256k1_context* ctx, secp256k1_sc
  break;
  }
  is_nonce_valid = secp256k1_scalar_set_b32_seckey(&non, nonce32);
- /* The nonce is still secret here, but it being invalid is is less likely than 1:2^255. */
+ /* The nonce is still secret here, but it being invalid is less likely than 1:2^255. */
  secp256k1_declassify(ctx, &is_nonce_valid, sizeof(is_nonce_valid));
  if (is_nonce_valid) {
  ret = secp256k1_ecdsa_sig_sign(&ctx->ecmult_gen_ctx, r, s, &sec, &msg, &non, recid);

src/txmempool.cpp

@@ -135,7 +135,7 @@ void CTxMemPool::UpdateTransactionsFromBlock(const std::vector<uint256> &vHashes
  // accounted for in the state of their ancestors)
  std::set<uint256> setAlreadyIncluded(vHashesToUpdate.begin(), vHashesToUpdate.end());
 
- // Iterate in reverse, so that whenever we are looking at at a transaction
+ // Iterate in reverse, so that whenever we are looking at a transaction
  // we are sure that all in-mempool descendants have already been processed.
  // This maximizes the benefit of the descendant cache and guarantees that
  // setMemPoolChildren will be updated, an assumption made in