Commit changes evaluation order of 'oemtype' which is an input parameter to
ipmi_oem_setup() in 'lib/ipmi_oem.c'. Make the check whether 'oemtype' is NULL
or not one of the first things we do rather than blindly use 'oemtype' in
strncmp() and then check if it isn't NULL. Yes, this is a potential crash
waiting to happen.
Reported-by: Ales Ledvinka