fix: use typeSize instead of hard coded '4'

Author: hengyoush

agent/protocol/decoder.go

@@ -116,7 +116,7 @@ func ExtractBEInt[TIntType int8 | int16 | int32 | uint32 | uint8 | int64](d *Bin
 
 func ExtractLEInt[TIntType int32 | uint32 | uint8](d *BinaryDecoder) (TIntType, error) {
 	typeSize := int(reflect.TypeOf(TIntType(0)).Size())
-	if len(d.str) < 4 {
+	if len(d.str) < typeSize {
 		return 0, ResourceNotAvailble
 	}
 	var x TIntType = 0
@@ -142,7 +142,7 @@ func BEndianBytesToInt[TIntType int32 | uint32 | uint8](d *BinaryDecoder) TIntTy
 
 func LEndianBytesToInt[TIntType int32 | uint32 | uint8](d *BinaryDecoder) TIntType {
 	typeSize := int(reflect.TypeOf(TIntType(0)).Size())
-	if len(d.str) < 4 {
+	if len(d.str) < typeSize {
 		return 0
 	}
 	var x TIntType = 0