Fix bug in json pretty printer which broke formatting and possibly

corrupted json

src/io/json.cpp

@@ -626,6 +626,11 @@ namespace fc
                 ss<<',';
               }
               break;
+            case 'n':
+              //If we're in quotes and see a \n, just print it literally but unset the escape flag.
+              if( quote && escape )
+                escape = false;
+              //No break; fall through to default case
             default:
               if( first ) {
                  ss<<'\n';