/usr/bin/cassandra looking for wrong libjemalloc.so file

In /usr/sbin/cassandra

Linux)
if [ -z $CASSANDRA_LIBJEMALLOC ] ; then
which ldconfig > /dev/null 2>&1
if [ $? = 0 ] ; then

1. e.g. for CentOS
   dirs="/lib64 /lib /usr/lib64 /usr/lib `ldconfig -v 2>/dev/null | grep -v '<sup>\s' | sed 's/</sup>([^:]):.$/\1/'`"
   else
2. e.g. for Debian, OpenSUSE
   dirs="/lib64 /lib /usr/lib64 /usr/lib `cat /etc/ld.so.conf /etc/ld.so.conf.d/*.conf | grep '^/'`"
   fi
   dirs=`echo $dirs | tr " " ":"`
   CASSANDRA_LIBJEMALLOC=$(find_library './libjemalloc\.so(\.1)' $dirs)

However...

1. find /usr/lib64 -name "jemalloc"
   /usr/lib64/libjemalloc.so.2