Governance: Use correct max size for multiple instruction transaction (#2891)

* fix: use correct max size for multiple instruction transaction

* chore: add instruction to serialisation tests

Author: SebastianBor

Anchor.toml

@@ -9,4 +9,4 @@ cluster = "mainnet"
 wallet = "~/.config/solana/id.json"
 
 [programs.mainnet]
-spl_governance = "GoVEr6xcF9QGrRFJC4kt9wiCdNqZzrG7KWdrm7viDnpa"
+spl_governance = "GovER5Lthms3bLBqWub97yVrMmEogzX7xNjdXpPPCVZw"

Cargo.lock

@@ -21,7 +21,7 @@ serde = "1.0.127"
 serde_derive = "1.0.103"
 solana-program = "1.9.5"
 spl-token = { version = "3.3", path = "../../../token/program", features = [ "no-entrypoint" ] }
-spl-governance= { version = "2.2.2", path ="../../program", features = [ "no-entrypoint" ]}
+spl-governance= { version = "2.2.3", path ="../../program", features = [ "no-entrypoint" ]}
 spl-governance-tools= { version = "0.1.2", path ="../../tools"}
 spl-governance-addin-api= { version = "0.1.1", path ="../../addin-api"}
 thiserror = "1.0"

governance/chat/program/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "spl-governance"
-version = "2.2.2"
+version = "2.2.3"
 description = "Solana Program Library Governance Program"
 authors = ["Solana Maintainers <[email protected]>"]
 repository = "https://github.com/solana-labs/solana-program-library"

governance/program/Cargo.toml

@@ -125,11 +125,10 @@ impl AccountMaxSize for ProposalTransactionV2 {
         let instructions_size = self
             .instructions
             .iter()
-            .map(|i| i.accounts.len() * 34 + i.data.len())
-            .sum::<usize>()
-            + 4;
+            .map(|i| i.accounts.len() * 34 + i.data.len() + 40)
+            .sum::<usize>();
 
-        Some(instructions_size + 98)
+        Some(instructions_size + 62)
     }
 }
 
@@ -273,6 +272,7 @@ mod test {
             accounts: vec![
                 create_test_account_meta_data(),
                 create_test_account_meta_data(),
+                create_test_account_meta_data(),
             ],
             data: vec![1, 2, 3],
         }]