Correct wrong cost value

In the current master, the tmpCostWithoutSplitFlags variable within xCheckRdCostIntrastores the value of tempCS->cost minus the cost necessary to code the split flags. tempCS->cost can be reset to MAX_DOUBLEif an lfnst pass obtains a zero CBF. However, right now tmpCostWithoutSplitFlagsis not updated when that happens. This MR corrects that error by setting tmpCostWithoutSplitFlagsto MAX_DOUBLE too if the zero-CBF condition is triggered for the lfnst passes.

changed the description

Thanks for the fix. Is there any result on the impact on coding performance? The impact looks not big, correct? Thanks.

No, the impact in CTC is almost negligible. However, it may be different with other configurations and in any case this code behaviour is clearly unintended.

merged

mentioned in commit 20267dcf