--geth prevent getTransactionReceipt from using pending. (#1325)

This mimics the fucntionality of Geth and the current unratified
JSONRPC spec (but not the functionality of eth and the ratified
spec).

ethcore/src/miner/transaction_queue.rs

@@ -425,7 +425,7 @@ impl TransactionQueue {
 
 	/// Add signed transaction to queue to be verified and imported
 	pub fn add<T>(&mut self, tx: SignedTransaction, fetch_account: &T, origin: TransactionOrigin) -> Result<TransactionImportResult, Error>
-		where T: Fn(&Address) -> AccountDetails {
+	where T: Fn(&Address) -> AccountDetails {
 
 		trace!(target: "miner", "Importing: {:?}", tx.hash());