[patch][lm32] Fix for PR 43726/43805

[Jon Beniston]

Hi Richard,

> > Ok to commit to trunk? It could also go on the 4.5 branch too.
> 
> You should add reduced testcases from the PRs to the testsuite.
> 
> How did you test your patch?

I ran the testsuite - it did actually fix one of the existing failing test
cases, so there is already a test case.

Cheers,
Jon