Some trivial cleanups/fixes:

* Avoid throwing in OrderBookDB::processTxn
* Fix missing space in debug output
* Avoid duplicate lock of PathRequest in updateAll
* Avoid shadowing in insertPathRequest
* Improve indentation in runOnCoroutine
* Remove extraneous space in ServerHandlerImp::processRequest

src/ripple/app/ledger/impl/LedgerMaster.cpp

@@ -670,7 +670,7 @@ public:
     {
         // A new ledger has been accepted as part of the trusted chain
         JLOG (m_journal.debug) << "Ledger " << ledger->info().seq
-                                         << "accepted :" << ledger->getHash ();
+                               << " accepted :" << ledger->getHash ();
         assert (ledger->stateMap().getHash ().isNonZero ());
 
         ledger->setValidated();