Check that post was saved

inbox.py

@@ -1623,19 +1623,21 @@ def inboxAfterCapabilities(session,keyId: str,handle: str,messageJson: {}, \
         obtainAvatarForReplyPost(session,baseDir,httpPrefix,domain,personCache,postJsonObject,debug)
 
         # save the post to file
+        postSavedToFile=False
         tries=0
         while tries<5:
             try:
                 with open(destinationFilename, 'w+') as fp:
                     commentjson.dump(postJsonObject, fp, indent=2, sort_keys=False)
+                    postSavedToFile=True
                     break
             except Exception as e:
                 print(e)
                 time.sleep(1)
                 tries+=1
 
+        if postSavedToFile:
             inboxUpdateCalendar(baseDir,handle,postJsonObject)
-
             inboxStorePostToHtmlCache(translate,baseDir,httpPrefix, \
                                       session,cachedWebfingers,personCache, \
                                       handle.split('@')[0],domain,port, \