[Issue 23317] New: runnable/cdvecfill.sh and compilable/cdcmp.d fail two test on binutils-2.39 due to objdump whitespace change

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=23317

          Issue ID: 23317
           Summary: runnable/cdvecfill.sh and compilable/cdcmp.d fail two
                    test on binutils-2.39 due to objdump whitespace change
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: slyfox at inbox.ru

Noticed new tests failure when updated nixpkgs from `binutils-2.38` to `2.39`:
https://github.com/NixOS/nixpkgs/pull/185297#issuecomment-1229881420

There `dmd-2.097.2` started failing 2 tests
https://hydra.nixos.org/log/fsda7n661p7nmb0xivb9sw2wgidhp5v0-dmd-2.097.2.drv:

    FAILED targets:
    - runnable/cdvecfill.sh
    - compilable/cdcmp.d

I think it happens because `objdump` in `binutils-2.39` stopped emitting
trailing whitespace after `ret` instruction:


    dmd/test $ diff -u ./test_results/compilable/cdcmp_0.o.dump.sanitized
./compilable/extra-files/cdcmp.out
     Disassembly of section .text.d_dso_init:

    @@ -1069,5 +1069,5 @@
       1c:  6a 01                   push   0x1
       1e:  48 8b fc                mov    rdi,rsp
       21:  e8 00 00 00 00          call   26 <.text.d_dso_init+0x26>
    -  26:  c9                      leave
    -  27:  c3                      ret<space><space><space><space>
    +  26:  c9                      leave
    +  27:  c3                      ret

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