clearing previous recorded video if start new one.

Author: kkb912002

lib/commands/record-screen.js

@@ -252,6 +252,9 @@ export async function startRecordingScreen (
     }
     this.log.debug('Forcing the active screen recording to stop');
     await this._screenRecorder.stop(true);
+  } else if (this._screenRecorder) {
+    this.log.debug('Clearing previous record');
+    await this._screenRecorder.stop(true);
   }
   this._screenRecorder = null;