message: address clang scan warning
  The warning:
  Value stored to 'atPos' is never read
diff: @@ -1522,7 +1522,7 @@ public:
  authority = fullURL.substr( authorityPos+2, authorityEndPos - (authorityPos + 2) );
  DBG( 3, "authority: '", authority, "'" );
  - size_t atPos = authority.find( '@' );
  + const size_t atPos = authority.find( '@' );
  bool atFound = (atPos != std::string::npos);
  if ( atFound ) {
  if ( atPos == 0 )
  @@ -1551,8 +1551,7 @@ public:
  url.hasUser_ = true;
  // delete user/pass including the at
  authority.erase( 0, atPos+1 );
  - } else
  - atPos = 0;
  + }
  // Instead of all the logic it is easier to work on substrings
  