Fixed ledger read fd leak. Reordered subsystem init. (#138)

src/sc.cpp

@@ -310,6 +310,7 @@ namespace sc
         // Write the json message and close write fd.
         if (write(stdinpipe[1], json.data(), json.size()) == -1)
         {
+            close(stdinpipe[1]);
             LOG_ERROR << errno << ": Failed to write to stdin of contract process.";
             return -1;
         }