[6884] Replaced iterator++ with ++iterator in for-loop-headers

i used this script
for i in ls *.[ch]*; do cat $i | sed -r 's/(.*for.*iterator.*;\
    *)([a-z0-9\_\*]+)\ *\+\+(.*)/\1++\2\3/' > /tmp/mangos/$i; done
for i in ls *.[ch]*; do cp /tmp/mangos/$i $i; done

and rechecked it with my eyes, if everything is right
i took only for-loops cause they can be gathered easier with a script

Signed-off-by: hunuza <hunuza@gmail.com>

src/game/Group.cpp

@@ -1109,7 +1109,7 @@ void Group::_setLeader(const uint64 &guid)
 
 void Group::_removeRolls(const uint64 &guid)
 {
-    for (Rolls::iterator it = RollId.begin(); it < RollId.end(); it++)
+    for (Rolls::iterator it = RollId.begin(); it < RollId.end(); ++it)
     {
         Roll* roll = *it;
         Roll::PlayerVote::iterator itr2 = roll->playerVote.find(guid);