Jason Robards in Treasure of Sierra Madre?
 

I was watching Treasure of the Sierra Madre last night. In the flophouse scene where we are introduced to Howard there is a man at the foot of Walter Houston's bed. His voice (he has one line) and face look alot like Jason Robards. Neither Robards Jr or Sr is listed as uncredited in the IMDB listing for the movie.

Can anyone identify this actor for me?

Thanks.