ESLint fix

I somehow managed to miss a single space

src/engine/runtime.js

@@ -1427,7 +1427,7 @@ class Runtime extends EventEmitter {
                 blockJSON.nextStatement = null; // null = available connection; undefined = terminal
             }
             break;
-       case BlockType.INLINE:
+        case BlockType.INLINE:
             blockJSON.output = null;
             blockInfo.disableMonitor = true;
             blockInfo.branchCount = blockInfo.branchCount || 1;