gcc.dg/uninit-pred-9_b.c: Correct last adjustment for cris-elf

The change at r12-4790 should have done the same change for
CRIS as was done for powerpc64*-*-*.  (Probably MMIX too but
that may have to wait until the next weekend.)

gcc/testsuite:
	* gcc.dg/uninit-pred-9_b.c: Correct last adjustment, for CRIS.