Foreshadowing? Two Places to Hide Horcruxes

[mt3t3l1]

No: HPFGUIDX 135676

I was reading Sorcerer's Stone again and this jumped out at me.
Hagrid is talking to Harry just before they leave the Hut-on-the-Rock.

"Gringotts is the safest place in the world for anything yeh want ter 
keep safe -- 'cept maybe Hogwarts."


We know that Voldy!Quirrell broke into Gringotts that same day in an 
unsuccessful attempt to steal the Sorcerer's Stone. I'm wondering,
did Voldy ever break into Gringotts to leave something behind? Or in 
his more reputable days, did Tom Riddle ever store something in one of
the vaults? This might be an excellent place to hide a Horcrux.

Merrylinks