Sorry about the confusion. But you are right it was supposed to be a bad wish that would doom them all. But not because of the fact that they will be teleported to the vacuum of space if she makes the wish. This is the what-if scenario of what would happen if Krillin didn't make the wish and Bulma instead got to make that wish. This is not a spoiler since the story is going to go in a different direction. Bulma was just using the word “location” as a figure of speech. If she was able to make the wish it would have been “I wish for everyone here to be teleported to the Planet that Raditz is currently at.” She would just assume that the place they would be teleported would be somewhere where they would be able to breathe. Since she knew that the Saiyans didn't use any oxygen masks when they arrived on Earth. Meaning that the air that the Saiyans were able to survive under was at least similar to the one that the Earth possessed. But yeah if he was in a condition where he have to used to use an oxygen mask and is using an oxygen mask they are screwed. After Bulma make that wish Shenron will reply with “I cannot grant you that wish as he is currently not on any planets.” Just like how he explained that he could not bring a Super Saiyan God to earth because it didn't exist in the Battle of Gods saga. Bulma will change her wish to teleport them to the planet that Raditz is heading towards. In this case Namek. They will be able to arrive on the planet safely(without Dai, Goku or other Saiyans or fighters apart from Piccolo and Krillin). They will have to face Frieza just like in the original series. They will be short on manpower and unable to stop Frieza and his army. Frieza probably doesn't even need to call the Ginyu squad. Bulma, Krillin and Gohan will die to Frieza’s underlings. Piccolo would fuse with Nail and would give Frieza some challenge but he would still fall without Frieza needing to use his final form.