initialising strpart to NULL
initialising strpart to NULL

fix for a GitHub Code Scanning / CodeQL  fail
basvodde/cpputest,offa/cpputest,cpputest/cpputest,basvodde/cpputest,basvodde/cpputest,cpputest/cpputest,offa/cpputest,cpputest/cpputest,cpputest/cpputest,offa/cpputest,basvodde/cpputest,offa/cpputest