Fixes a crash when the server process attempts to check the PID of the
lock file that resulted because an integer (os.getpid()) was attempting
to be concatenated to a string
(Bitbake rev: 5d499682a0a739b5269247a8f6dbb874e3eec456)
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>