Fix profile image upload bug

- Fix bug where the upload failed because a nonexistend profile picture can't be deleted

src/routes/UploadRoute.ts

@@ -112,12 +112,14 @@ export class UploadRoute extends Route {
                 .toFile(filePath);
             fileName = `/${dataDirName}/${fileBasename}`;
             const user = await User.findByPk(request.session.userId);
+            if (user.profilePicture) {
                 const oldProfilePicture = path.join(this.dataDir, path.basename(user.profilePicture));
                 if (await fsx.pathExists(oldProfilePicture)) {
                     await fsx.unlink(oldProfilePicture);
                 } else {
                     globals.logger.warn(`Could not delete ${oldProfilePicture}: Not found!`);
                 }
+            }
             user.profilePicture = fileName;
             await user.save();
             success = true;