utreexoserver doesn't resume with Flatter TTL data

[kcalvinalvin]

I don't think the comment I left here was ever addressed #279 (comment)

Here's the error log that I had.

Done writing. Height 72347 Forest: can't print 227963 leaves. roots:
        0 ffcf670b1d59096e16234622
        1 224909094ee8023106bbf855        2 28403614720757cd9b4c2c18
        3 7e44ff52b8ade3d154391bc6
        4 d01b92dcd5e40d766f3c7334        5 87cb97591051431f6fe2cc1c
        6 875d05288e83207b39bb5b15
        7 4800f5b501e753ff2c1b8c89
        8 3d7c2e87806e2e770b23e99c        9 224efc6526359d369c0d2926 
        10 a4843c23761c4ceb287838d2
        11 f8809f36cabc048bac0d1ba4
        12 0c1e0dcee5c60af5b58a1a34                                                                                              
[N] calvin@bitcoin ~/b/g/u/g/s/g/m/u/c/utreexoserver (master)> ./run.sh
Has access to forest, resuming
restore height 72347                                            Starting forest: can't print 227963 leaves. roots:
        0 ffcf670b1d59096e16234622
        1 224909094ee8023106bbf855
        2 28403614720757cd9b4c2c18
        3 7e44ff52b8ade3d154391bc6
        4 d01b92dcd5e40d766f3c7334
        5 87cb97591051431f6fe2cc1c
        6 875d05288e83207b39bb5b15
        7 4800f5b501e753ff2c1b8c89        8 3d7c2e87806e2e770b23e99c        9 224efc6526359d369c0d2926         10 a4843c23761c4ceb287838d2
        11 f8809f36cabc048bac0d1ba4
        12 0c1e0dcee5c60af5b58a1a34                                
Building Proofs and ttls...                                                                                                      
panic: utxo created h 72347 idx in block 12 destroyed h 72348 but max h 72347 cur h 72347
                                
goroutine 10 [running]:                                                                                                          
github.com/mit-dci/utreexo/bridgenode.flatFileWorkerTTL(0xc000042420, 0xc000042540, 0xc0000182b8, 0x13, 0xc000016240, 0x22, 0xc000022400, 0x31, 0xc0000182d0, 0x12, ...)
        /home/calvin/bitcoin-projects/go/utreexo/go/src/github.com/mit-dci/utreexo/bridgenode/flatfileworker.go:181 +0x4a9
created by github.com/mit-dci/utreexo/bridgenode.BuildProofs
        /home/calvin/bitcoin-projects/go/utreexo/go/src/github.com/mit-dci/utreexo/bridgenode/genproofs.go:110 +0x4e8

Until this gets fixed, I think making the previous TTL data with leveldb by default is the way to go.