fix ipfs_cid detection logic
fix ipfs_cid detection logic

@obfusk caught this.

I messed up in 02a91cba66f8ac46cdfbc2561f2339b680b from !1202

f-droid/fdroidserver,f-droid/fdroidserver,f-droid/fdroidserver,f-droid/fdroidserver,f-droid/fdroidserver