annotate_loops(): fix memory leak (#30)
annotate_loops(): fix memory leak (#30)

In the previous implementation, `claststmts' would be freed at each end
of the iteration of a while loop. However, if `nclastloops == 0', the
loop would continue to its next iteration without freeing `claststmts'.

The current implementation frees `claststmts' as soon as it is useless,
ensuring it is always freed.

Signed-off-by: Harenome Ranaivoarivony Razanajato <d605e4c16ed82bd37525013e041b5b8e1b4d6617@etu.unistra.fr>
UBERTC/cloog,periscop/cloog,periscop/cloog,UBERTC/cloog,UBERTC/cloog