Snippets for aldo 0.7.7 from Fedora s390x

Sourced from https://kojipkgs.fedoraproject.org/packages/aldo/0.7.7/20.fc45/data/logs/s390x/build.log.

• wave.cc:43:8: warning: ‘this_19(D)->m_data’ is used uninitialized [-Wuninitialized]
     43 |     if(m_data != 0)
        |        ^~~~~~
  

• wave.cc:55:5: warning: ‘temp.m_data’ is used uninitialized [-Wuninitialized]
     55 |     if(m_data != 0)
        |     ^~