SiS_DDC2Delay: initialize variable before adding to it
Fixes issue flagged by Oracle Parfait 13.3 static analyser:
Uninitialised variable [uninitialised-var]:
Uninitialised variable 'j' may be used for addition with
SiS_GetReg(SiS_Pr->SiS_P3c4, 5)
at line 424 of src/init301.c in function 'SiS_DDC2Delay'.
Though in truth, it doesn't matter much since we never read the values written to 'j'.
Signed-off-by: Alan Coopersmith