Merge pull request #4766 from TN-SKYC/Authors-bug

Bug in matching author of a book when this author already exists in the db.

server/scanner/Scanner.js

@@ -259,7 +259,7 @@ class Scanner {
             SocketAuthority.emitter('author_added', author.toOldJSON())
             // Update filter data
             Database.addAuthorToFilterData(libraryItem.libraryId, author.name, author.id)
-
+          }
           await Database.bookAuthorModel
             .create({
               authorId: author.id,
@@ -271,7 +271,6 @@ class Scanner {
               hasAuthorUpdates = true
             })
         }
-        }
         const authorsRemoved = libraryItem.media.authors.filter((a) => !matchData.author.find((ma) => ma.toLowerCase() === a.name.toLowerCase()))
         if (authorsRemoved.length) {
           for (const author of authorsRemoved) {