Consecutive swap?

[Telborn]

Hello everyone, yesterday I was playing this game nad got into a situation where only one tunnel was still open and it was on a fully blocked 2x1 slot, the only piece that could fit is was the C shape tile and I didn't have it on my hand. in this situation am I forced to keep redrawing until this piece shows up or do I lose the game after certain amount of swaps?

[ufm]

If the fitting card is still in the deck, you have to redraw until you find it. If not, the game ends in defeat automatically.