Fix event comment (#1315)

### What

Context - stellar/stellar-protocol#1522

The second commit for unwrap.rs is required due to
rust-lang/rust#129031.

soroban-sdk/src/token.rs

@@ -140,7 +140,7 @@ pub trait TokenInterface {
     /// # Events
     ///
     /// Emits an event with topics `["transfer", from: Address, to: Address],
-    /// data = [amount: i128]`
+    /// data = amount: i128`
     fn transfer(env: Env, from: Address, to: Address, amount: i128);
 
     /// Transfer `amount` from `from` to `to`, consuming the allowance that
@@ -164,7 +164,7 @@ pub trait TokenInterface {
     /// # Events
     ///
     /// Emits an event with topics `["transfer", from: Address, to: Address],
-    /// data = [amount: i128]`
+    /// data = amount: i128`
     fn transfer_from(env: Env, spender: Address, from: Address, to: Address, amount: i128);
 
     /// Burn `amount` from `from`.
@@ -180,8 +180,8 @@ pub trait TokenInterface {
     ///
     /// # Events
     ///
-    /// Emits an event with topics `["burn", from: Address], data = [amount:
-    /// i128]`
+    /// Emits an event with topics `["burn", from: Address], data = amount:
+    /// i128`
     fn burn(env: Env, from: Address, amount: i128);
 
     /// Burn `amount` from `from`, consuming the allowance of `spender`.
@@ -204,8 +204,8 @@ pub trait TokenInterface {
     ///
     /// # Events
     ///
-    /// Emits an event with topics `["burn", from: Address], data = [amount:
-    /// i128]`
+    /// Emits an event with topics `["burn", from: Address], data = amount:
+    /// i128`
     fn burn_from(env: Env, spender: Address, from: Address, amount: i128);
 
     /// Returns the number of decimals used to represent amounts of this token.
@@ -286,7 +286,7 @@ pub trait StellarAssetInterface {
     /// # Events
     ///
     /// Emits an event with topics `["mint", admin: Address, to: Address], data
-    /// = [amount: i128]`
+    /// = amount: i128`
     fn mint(env: Env, to: Address, amount: i128);
 
     /// Clawback `amount` from `from` account. `amount` is burned in the
@@ -301,7 +301,7 @@ pub trait StellarAssetInterface {
     /// # Events
     ///
     /// Emits an event with topics `["clawback", admin: Address, to: Address],
-    /// data = [amount: i128]`
+    /// data = amount: i128`
     fn clawback(env: Env, from: Address, amount: i128);
 }
 
@@ -330,7 +330,7 @@ pub(crate) const SPEC_XDR_INPUT: &[&[u8]] = &[
     &StellarAssetSpec::spec_xdr_transfer_from(),
 ];
 
-pub(crate) const SPEC_XDR_LEN: usize = 6460;
+pub(crate) const SPEC_XDR_LEN: usize = 6456;
 
 impl StellarAssetSpec {
     /// Returns the XDR spec for the Token contract.

soroban-sdk/src/unwrap.rs

@@ -64,6 +64,9 @@ impl<T> UnwrapInfallible for Result<T, Infallible> {
             // destructuring the `never` variable into an empty set of cases is
             // the most honest since it's statically checked to _be_ infallible,
             // not just an assertion of our hopes.)
+
+            // This allow and the Err can be removed once 1.82 becomes stable
+            #[allow(unreachable_patterns)]
             Err(never) => match never {},
         }
     }