PendingBuffer ToByteArray() to return all bytes

If AlignToByte() (or a procedure similar to that in Flush()) is not done within ToByteArray(), the bits variable may contain up to 15 bits not present in buffer_ which could result in data truncation. I have added AlignToByte() on the assumption that ToByteArray() will only be called when all output to PendingBuffer is complete.

Author: charlesgriffiths

ICSharpCode.SharpZipLib/Zip/Compression/PendingBuffer.cs

@@ -245,6 +245,8 @@ public int Flush(byte[] output, int offset, int length)
 		/// </returns>
 		public byte[] ToByteArray()
 		{
+			AlignToByte();
+			
 			byte[] result = new byte[end - start];
 			System.Array.Copy(buffer_, start, result, 0, result.Length);
 			start = 0;