What happens if you sin before sleeping?

My question is, what would happen to a person if they committed a sin and didn’t repent, but prior to falling asleep, they recited the Shahada? In Islam, if one’s final words are the Shahada, they will be admitted into paradise. But, would sinning and not repenting interfere with that? Example:
Say if someone watched pornography before sleeping and they didn’t repent, but before going to sleep they recited the Shahada in case they passed away. Would this ruin their chance of entering Jannah? Or would the Shahada ultimately cancel off their sin and they’ll still be able to enter Jannah?