[Bug] commit 39070b7fc7 breaks babel test

[Achim Gratz <Stromeko@nexgo.de>]

Hi Eric,

this change seems to introduce additional line breaks in the following
test:

--8<---------------cut here---------------start------------->8---
Test test-ob/catches-all-references condition:
    (ert-test-failed
     ((should
       (string=
        (org-babel-execute-src-block)
        "A literal example\non two lines for me."))
      :form
      (string= "A literal example\non two lines\n for me." "A literal example\non two lines for me.")
      :value nil))
   FAILED  1/1  test-ob/catches-all-references
--8<---------------cut here---------------end--------------->8---

This seems to happen because the final \n from the babel result is not
stripped anymore, pointing to the change in ob-core.  IIRC we
flip-flopped a few times already with including or not including this
final newline, so I don't know whether the code or the test should
change.


Regards,
Achim.
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