ffdc: Only proceed with PEL creation if there is an error

Sometimes the listening application is woken up to read the FFDC file
even if there is no error. Catch this case before trying to create a
PEL. Also, make sure the app doesn't crash trying to get the PEL
service.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Change-Id: I84f3f6d56054c08507473ecf8908ecc3901aaeaa
1 file changed