PWGGA/GammaConv: Fixed wrong implementation of PCM smearing function
PWGGA/GammaConv: Fixed wrong implementation of PCM smearing function

alisw/AliPhysics,pchrista/AliPhysics,victor-gonzalez/AliPhysics,victor-gonzalez/AliPhysics,amaringarcia/AliPhysics,adriansev/AliPhysics,AMechler/AliPhysics,fcolamar/AliPhysics,alisw/AliPhysics,AMechler/AliPhysics,AMechler/AliPhysics,pchrista/AliPhysics,mpuccio/AliPhysics,alisw/AliPhysics,fcolamar/AliPhysics,mpuccio/AliPhysics,alisw/AliPhysics,alisw/AliPhysics,adriansev/AliPhysics,AMechler/AliPhysics,amaringarcia/AliPhysics,mpuccio/AliPhysics,fcolamar/AliPhysics,adriansev/AliPhysics,rihanphys/AliPhysics,victor-gonzalez/AliPhysics,victor-gonzalez/AliPhysics,fcolamar/AliPhysics,adriansev/AliPhysics,alisw/AliPhysics,nschmidtALICE/AliPhysics,rbailhac/AliPhysics,mpuccio/AliPhysics,victor-gonzalez/AliPhysics,rbailhac/AliPhysics,pchrista/AliPhysics,amaringarcia/AliPhysics,amaringarcia/AliPhysics,rihanphys/AliPhysics,rihanphys/AliPhysics,pchrista/AliPhysics,rbailhac/AliPhysics,rbailhac/AliPhysics,pchrista/AliPhysics,rihanphys/AliPhysics,victor-gonzalez/AliPhysics,mpuccio/AliPhysics,nschmidtALICE/AliPhysics,nschmidtALICE/AliPhysics,rbailhac/AliPhysics,fcolamar/AliPhysics,pchrista/AliPhysics,alisw/AliPhysics,rihanphys/AliPhysics,AMechler/AliPhysics,amaringarcia/AliPhysics,rihanphys/AliPhysics,nschmidtALICE/AliPhysics,rbailhac/AliPhysics,amaringarcia/AliPhysics,adriansev/AliPhysics,mpuccio/AliPhysics,nschmidtALICE/AliPhysics,pchrista/AliPhysics,fcolamar/AliPhysics,AMechler/AliPhysics,amaringarcia/AliPhysics,AMechler/AliPhysics,adriansev/AliPhysics,adriansev/AliPhysics,mpuccio/AliPhysics,nschmidtALICE/AliPhysics,victor-gonzalez/AliPhysics,fcolamar/AliPhysics,rbailhac/AliPhysics,nschmidtALICE/AliPhysics,rihanphys/AliPhysics