[O] traling whitespace inconsistency for inline babel

[Daniele Pizzolli]

Hello Charles,

Thanks for fixing the leading whitespace issue.

I found another, more impacting, inconsistency involving trailing
whitespace during export in release_8.3beta-780-g37fc86:

The following line in org:

1 + 4 in R is src_R[:exports results]{1+4}.

Export in latex correctly as:

1 + 4 in R is 5.

while the following (with the babel result):

1 + 4 in R is src_R[:exports results]{1+4} {{{results(5)}}}.

export with an extra trailing whitespace in latex:

1 + 4 in R is 5 .

Thanks,
Daniele