fix for stalled syc if network becomes unreachable and reconnects
fix for stalled syc if network becomes unreachable and reconnects

jups/breadwallet,breadwallet/breadwallet,QuantumExplorer/breadwallet,thrasher-/breadwallet,thrasher-/breadwallet,voisine/breadwallet,breadwallet/breadwallet,bhugo/breadwallet,BitcoinAuthenticator/breadwallet-authenticator,Stirling/BreadwalletForAuroracoin,Kirvx/breadwallet,bhugo/breadwallet,litecoin-association/LoafWallet,GetGems/breadwallet,voisine/breadwallet,litecoin-association/LoafWallet,mirrax/breadwallet,voisine/breadwallet,voisine/breadwallet,litecoin-association/LoafWallet,dworznik/breadwallet,negedzuregal/breadwallet,QuantumExplorer/breadwallet,bhugo/breadwallet,voisine/breadwallet,QuantumExplorer/breadwallet,litecoin-association/LoafWallet,breadwallet/breadwallet,samuraisam/breadwallet,samuraisam/breadwallet,samuraisam/breadwallet,QuantumExplorer/breadwallet