Code cleanup.

Assets/Cryville/Common/Pdt/PdtVariableMemory.cs

@@ -43,7 +43,9 @@ namespace Cryville.Common.Pdt {
 		/// <param name="dest">The destination buffer.</param>
 		/// <param name="destOffset">The offset on the destination buffer to start copying to.</param>
 		/// <param name="length">The length to copy.</param>
+		/// <exception cref="ArgumentOutOfRangeException"><paramref name="length" /> is greater than the length of the span.</exception>
 		public void CopyTo(byte* dest, int destOffset, int length) {
+			if (length > Length) throw new ArgumentOutOfRangeException("length");
 			for (int i = 0; i < length; i++)
 				dest[destOffset + i] = _ptr[i];
 		}