Core/Player: Fix Restes/RaF exp on the exp bar and from kills

Changed the switch to the IF statement that was posted and worked flawlessly.

Reopening as I fubar'd my repo :/
/home/travis/build/TrinityCore/TrinityCore/src/server/game/Entities/Player/Player.cpp:21239:10: fatal error: 
      use of undeclared identifier 'GetsRecruitAFriendbonus'; did you mean
      'GetsRecruitAFriendBonus'?
    if ((GetsRecruitAFriendbonus(true) && (GetSession()->IsARecruiter() ...

case failure,
```c++
GetsRecruitAFriendbonus(true)
```
to
```c++
GetsRecruitAFriendBonus(true)
```