[PVR] Fix CID 188792: Memory - illegal accesses (WRAPPER_ESCAPE).

[ksooo]

Fixes a Coverity issue introduced by #14616.

*** CID 188792:  Memory - illegal accesses  (WRAPPER_ESCAPE)
/xbmc/addons/PVRClient.cpp: 691 in PVR::CAddonEpgTag::CAddonEpgTag(std::shared_ptr)()
685         strDirector = m_strDirector.c_str();
686         strWriter = m_strWriter.c_str();
687         strIMDBNumber = m_strIMDBNumber.c_str();
688         strEpisodeName = m_strEpisodeName.c_str();
689         strIconPath = m_strIconPath.c_str();
690         strSeriesLink = m_strSeriesLink.c_str();
>>>     CID 188792:  Memory - illegal accesses  (WRAPPER_ESCAPE)
>>>     The internal representation of temporary of type "std::string const" escapes into "this->strGenreDescription", but is destroyed when it exits scope.
691         strGenreDescription = kodiTag->GetGenresLabel().c_str();
692       }
693     
694       virtual ~CAddonEpgTag() = default;
695     
696     private:

[ksooo]

jenkins error is unrelated.