Check & fix UTF-8 strings before adding/updating files

src/filescanner.c

@@ -284,6 +284,8 @@ process_media_file(char *file, time_t mtime, off_t size, int compilation)
 
   fixup_tags(&mfi);
 
+  unicode_fixup_mfi(&mfi);
+
   if (mfi.id == 0)
     db_file_add(&mfi);
   else

src/filescanner_itunes.c

@@ -424,6 +424,7 @@ process_track_file(plist_t trk, char *base)
 	}
     }
 
+  unicode_fixup_mfi(mfi);
   db_file_update(mfi);
 
   free_mfi(mfi, 0);

src/httpd_dacp.c

@@ -667,6 +667,9 @@ dacp_propset_userrating(const char *value, struct evkeyvalq *query)
 
   mfi->rating = rating;
 
+  /* We're not touching any string field in mfi, so it's safe to
+   * skip unicode_fixup_mfi() before the update
+   */
   db_file_update(mfi);
 
   free_mfi(mfi, 0);