add missing parameter flag

in dbgutil build gave:
warn:legacy.osl:27022:1:tools/source/rc/resmgr.cxx:701:
file:///build/libo/dev/instdir/program/../program/resource/scen-US.res
Class: 272, Id: 436. Classpointer not at the end!
Resource Stack
Class: 272, Id: 25044

and the following value of the suppress flag was taken in place of the
parameter flag, which was identical and didn't harm in this case, but ...

Change-Id: I951381ef2a5c2d7d7d44892ad5c34ea77ace51ce