logger command between on RHEL6.2 and on RHEL6.4 is different

Issue

• On RHEL6.2, logger command output includes space after "FOO:" as follows:
• On RHEL6.2:

 # logger -t "FOO:BAR" "foobarbaz"

 /var/log/messages
 ----------------------------------------------------
  Aug  8 23:10:04 RHEL62 FOO: BAR: foobarbaz
                             ^ <- Space is included.
 ----------------------------------------------------

• On the other hand, on RHEL6.4, logger command output doesn't include space after "FOO:" as follows:
• On RHEL6.4:

 # logger -t "FOO:BAR" "foobarbaz"

 /var/log/messages
 ----------------------------------------------------
  Aug  8 23:12:20 RHEL64 FOO:BAR: foobarbaz
                             ^ <- Space is not included.
 ----------------------------------------------------