Revert "Fixed a corner case in calculating relaxed DKIM-Signature bod…

…y hashes"

This reverts commit 5abf902.

MimeKit/Cryptography/DkimRelaxedBodyFilter.cs

@@ -51,7 +51,7 @@ public DkimRelaxedBodyFilter ()
 			lwsp = false;
 		}
 
-		unsafe int Filter (byte* inbuf, int length, byte* outbuf, bool flush)
+		unsafe int Filter (byte* inbuf, int length, byte* outbuf)
 		{
 			byte* inend = inbuf + length;
 			byte* outptr = outbuf;
@@ -110,13 +110,6 @@ unsafe int Filter (byte* inbuf, int length, byte* outbuf, bool flush)
 				inptr++;
 			}
 
-			if (flush && lwsp) {
-				// collapse lwsp to a single space
-				*outptr++ = (byte) ' ';
-				lwsp = false;
-				count++;
-			}
-
 			return count;
 		}
 
@@ -140,7 +133,7 @@ protected override byte[] Filter (byte[] input, int startIndex, int length, out
 
 			unsafe {
 				fixed (byte* inptr = input, outptr = OutputBuffer) {
-					outputLength = Filter (inptr + startIndex, length, outptr, flush);
+					outputLength = Filter (inptr + startIndex, length, outptr);
 				}
 			}
 

UnitTests/DkimRelaxedBodyFilterTests.cs

@@ -91,22 +91,5 @@ public void TestNonEmptyBodyEndingWithMultipleNewLines ()
 
 			Assert.AreEqual (expected, actual);
 		}
-
-		[Test]
-		public void TestTrailingLineWithOnlySpaceOrTab ()
-		{
-			const string text = "Hello!\r\n\r\n ";
-			const string expected = "Hello!\r\n\r\n ";
-			var input = Encoding.ASCII.GetBytes (text);
-			var filter = new DkimRelaxedBodyFilter ();
-			int outputIndex, outputLength;
-			byte[] output;
-			string actual;
-
-			output = filter.Flush (input, 0, input.Length, out outputIndex, out outputLength);
-			actual = Encoding.ASCII.GetString (output, outputIndex, outputLength);
-
-			Assert.AreEqual (expected, actual);
-		}
 	}
 }