refactor(clippy): avoid unnecessary vec conversion

Author: Tommytrg

node/src/actors/inventory_manager/handlers.rs

@@ -140,7 +140,7 @@ impl InventoryManager {
         // staking/unstaking merkle roots
         let fix = |bytes: Vec<u8>| {
             if bytes[260..264] == [0x51, 0x00, 0x00, 0x00] {
-                [&bytes[..260], &vec![0u8; 72], &bytes[260..], &vec![0u8; 16]].concat()
+                [&bytes[..260], &[0u8; 72], &bytes[260..], &[0u8; 16]].concat()
             } else {
                 bytes
             }

wallet/src/repository/wallet/mod.rs

@@ -317,7 +317,7 @@ where
             u64::try_from(get_timestamp()).expect("Get timestamp should return a positive value");
         let v2_balance_fix = |bytes: &[u8]| {
             if bytes.len() == 16 {
-                [&bytes[..], &vec![0u8; 8]].concat()
+                [bytes, &[0u8; 8]].concat()
             } else {
                 Vec::from(bytes)
             }