Address review comments from bitcoin#22918

* fix English in release notes
* Simplify `switch` to `if`.

Author: kiminuo

doc/release-notes.md

@@ -82,7 +82,7 @@ Updated RPCs
   `gettransaction verbose=true` and REST endpoints `/rest/tx`, `/rest/getutxos`,
   `/rest/block` no longer return the `addresses` and `reqSigs` fields, which
   were previously deprecated in 22.0. (#22650)
-- The `getblock` RPC command now supports verbose level 3 containing transaction inputs
+- The `getblock` RPC command now supports verbosity level 3 containing transaction inputs'
   `prevout` information.  The existing `/rest/block/` REST endpoint is modified to contain
   this information too. Every `vin` field will contain an additional `prevout` subfield
   describing the spent output. `prevout` contains the following keys:

src/core_write.cpp

@@ -208,22 +208,17 @@ void TxToUniv(const CTransaction& tx, const uint256& hashBlock, UniValue& entry,
             const CTxOut& prev_txout = prev_coin.out;
 
             amt_total_in += prev_txout.nValue;
-            switch (verbosity) {
-                case TxVerbosity::SHOW_TXID:
-                case TxVerbosity::SHOW_DETAILS:
-                    break;
 
-                case TxVerbosity::SHOW_DETAILS_AND_PREVOUT:
-                    UniValue o_script_pub_key(UniValue::VOBJ);
-                    ScriptPubKeyToUniv(prev_txout.scriptPubKey, o_script_pub_key, /* includeHex */ true);
+            if (verbosity == TxVerbosity::SHOW_DETAILS_AND_PREVOUT) {
+                UniValue o_script_pub_key(UniValue::VOBJ);
+                ScriptPubKeyToUniv(prev_txout.scriptPubKey, o_script_pub_key, /*include_hex=*/ true);
 
-                    UniValue p(UniValue::VOBJ);
-                    p.pushKV("generated", bool(prev_coin.fCoinBase));
-                    p.pushKV("height", uint64_t(prev_coin.nHeight));
-                    p.pushKV("value", ValueFromAmount(prev_txout.nValue));
-                    p.pushKV("scriptPubKey", o_script_pub_key);
-                    in.pushKV("prevout", p);
-                    break;
+                UniValue p(UniValue::VOBJ);
+                p.pushKV("generated", bool(prev_coin.fCoinBase));
+                p.pushKV("height", uint64_t(prev_coin.nHeight));
+                p.pushKV("value", ValueFromAmount(prev_txout.nValue));
+                p.pushKV("scriptPubKey", o_script_pub_key);
+                in.pushKV("prevout", p);
             }
         }
         in.pushKV("sequence", (int64_t)txin.nSequence);

src/rpc/blockchain.cpp

@@ -229,6 +229,7 @@ UniValue blockToJSON(const CBlock& block, const CBlockIndex* tip, const CBlockIn
                 TxToUniv(*tx, uint256(), objTx, true, RPCSerializationFlags(), txundo, verbosity);
                 txs.push_back(objTx);
             }
+            break;
     }
 
     result.pushKV("tx", txs);