fix indentation

Author: meganrogge

addons/addon-serialize/src/SerializeAddon.ts

@@ -452,11 +452,11 @@ export class SerializeAddon implements ITerminalAddon , ISerializeApi {
     const onlySelection = options.onlySelection ?? false;
     const range = options.range;
     if (range) {
-        return handler.serialize({
-          start: { x: 0,             y: typeof range.start === 'number' ? range.start : range.start.line },
-          end:   { x: terminal.cols, y: typeof range.end   === 'number' ? range.end   : range.end.line   }
-        });
-      }
+      return handler.serialize({
+        start: { x: 0,             y: typeof range.start === 'number' ? range.start : range.start.line },
+        end:   { x: terminal.cols, y: typeof range.end   === 'number' ? range.end   : range.end.line   }
+      });
+    }
     if (!onlySelection) {
       const maxRows = buffer.length;
       const scrollback = options.scrollback;