Function validatePointerOffset

validatePointerOffset(
    offset: number,
    bufferStart: number,
    currentOffset: number,
    bufferSize: number,
    context: string,
): void
Validates a DNS name compression pointer offset
Parameters
- offset: number
  The pointer offset to validate
- bufferStart: number
  Starting offset of the buffer
- currentOffset: number
  Current read position
- bufferSize: number
  Total buffer size
- context: string
  Descriptive context for error messages
Returns void
Throws
Error if pointer is invalid