RFR: 8333477: Delete extra empty spaces in Makefiles [v2]

[Julian Waters]

On Fri, 7 Jun 2024 13:01:15 GMT, SendaoYan <syan at openjdk.org> wrote:

>> As confusing as they are, unfortunately GitHub UI does not render extra trailing newlines. This is the only one I could find with grepWin.
>
> I find the extra trailing newlines through below shell command:
> 
> for i in `find . -iname "Makefile*" | sed "/./build/d"` ; do tail -n 2 $i | grep -c "^$" | grep -q "^1$" ; if [[ 0 -eq $? ]] ; then echo $i ; fi ; done
> 
> 
> There are only two files has been found:
> 
> ./test/jdk/java/rmi/reliability/benchmark/bench/rmi/Makefile
> ./test/jdk/java/rmi/reliability/benchmark/bench/Makefile

Ah, I had not realized that there was more than 1 newline. GitHub's UI confused me here, so we're good to go

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PR Review Comment: https://git.openjdk.org/jdk/pull/19537#discussion_r1631213656