show-stake-account now works for reward pool accounts (#5416)

automerge

book/src/jsonrpc-api.md

@@ -227,7 +227,7 @@ Returns all accounts owned by the provided program Pubkey
 
 ##### Results:
 The result field will be an array of arrays. Each sub array will contain:
-* `string` - a the account Pubkey as base-58 encoded string
+* `string` - the account Pubkey as base-58 encoded string
 and a JSON object, with the following sub fields:
 
 * `lamports`, number of lamports assigned to this account, as a signed 64-bit integer

wallet/src/wallet.rs

@@ -725,10 +725,12 @@ fn process_show_stake_account(
             }
             Ok("".to_string())
         }
+        Ok(StakeState::RewardsPool) => Ok("Stake account is a rewards pool".to_string()),
         Ok(StakeState::Uninitialized) => Ok("Stake account is uninitialized".to_string()),
-        _ => Err(WalletError::RpcRequestError(
-            "Account data could not be deserialized to stake state".to_string(),
-        ))?,
+        Err(err) => Err(WalletError::RpcRequestError(format!(
+            "Account data could not be deserialized to stake state: {:?}",
+            err
+        )))?,
     }
 }