Fixed a big bug

Previously the loafwallet-core geenrated new addresses using BRWalletReceiveAddress.description
But this stopped generating an address
Used a new method to take a char array and converting it to a LTC Address (a string)

Signed-off-by: kcw-grunt <[email protected]>

litewallet/BRWallet.swift

@@ -37,7 +37,7 @@ class BRWallet {
 
 	// the first unused external address
 	var receiveAddress: String {
-		return BRWalletReceiveAddress(cPtr).description
+		return charInt8ToString(charArray: BRWalletReceiveAddress(cPtr).s)
 	}
 
 	// all previously genereated internal and external addresses