That code should not — and indeed does not — add a newline.

Windows: 

>debug test~1.bin
-rcx
CX 0010
:
-d100 l10
0AE5:0100  01 02 03 04 05 06 07 08-09 0A 0B 0C 0D 0E 0F 10   .........
+.......
-q

[download]

Linux: 

$ od -t x1 test.binary
0000000 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 10
0000020

[download]

I suspect you opened the binary file with a text editor that always ends a file with a newline (as is the practice in unix) before doing the hex dump.

In reply to Re: Newline appearing at the end of a file by ikegami
in thread Newline appearing at the end of a file by TGI

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