fix BRTar error detection logic
fix BRTar error detection logic

QuantumExplorer/breadwallet,voisine/breadwallet,litecoin-association/LoafWallet,QuantumExplorer/breadwallet,breadwallet/breadwallet,voisine/breadwallet,samuraisam/breadwallet,breadwallet/breadwallet,samuraisam/breadwallet,samuraisam/breadwallet,voisine/breadwallet,litecoin-association/LoafWallet,thrasher-/breadwallet,thrasher-/breadwallet,litecoin-association/LoafWallet,voisine/breadwallet,voisine/breadwallet,breadwallet/breadwallet,litecoin-association/LoafWallet,QuantumExplorer/breadwallet,QuantumExplorer/breadwallet