astftpd.c:718:30: warning: self-comparison always evaluates to false [-Wtautological-compare]

[dmitry-sinina]

$ make
mkdir -p .d
cc -std=c99 -Wall -g -O2 -pipe -pthread -MT astftpd.o -MMD -MP -MF .d/astftpd.Td -o astftpd.o -c astftpd.c
astftpd.c: In function ‘sort_clients_by_deadline’:
astftpd.c:718:30: warning: self-comparison always evaluates to false [-Wtautological-compare]
    if (clients[i+1]->sent_ts < clients[i+1]->sent_ts) {
                              ^
mv -f .d/astftpd.Td .d/astftpd.d
cc -pthread -o astftpd astftpd.o
mkdir -p .d
cc -std=c99 -Wall -g -O2 -pipe -pthread -MT asclient.o -MMD -MP -MF .d/asclient.Td -o asclient.o -c asclient.c
mv -f .d/asclient.Td .d/asclient.d
cc -pthread -o asclient asclient.o

Is it normal situation?