idz: Fix unknownA_2 message length rounding

src/idz/userdb/decoder/unknownA.ts

@@ -8,7 +8,7 @@ export function unknownA_1(buf: Buffer): UnknownRequestA {
 }
 
 unknownA_2.msgCode = 0x00a2;
-unknownA_2.msgLen = 0x061c;
+unknownA_2.msgLen = 0x0620;
 
 export function unknownA_2(buf: Buffer): UnknownRequestA {
   return { type: "unknown_A_req" };