out_s3: fixed potential segfault on file discard

In the upload queue logic, if we exceed the acceptable number of upload errors in a row,
we remove the entry from the upload queue. However, instead of immediately moving onto
the next entry, we try to set upload_time. This will cause a segfault. Adding a continue
after removing entry will fix this issue.

Signed-off-by: Stephen Lee <[email protected]>

plugins/out_s3/s3.c

@@ -1637,6 +1637,7 @@ static void s3_upload_queue(struct flb_config *config, void *out_context)
                 s3_store_file_inactive(ctx, upload_contents->upload_file);
                 multipart_upload_destroy(upload_contents->m_upload_file);
                 remove_from_queue(upload_contents);
+                continue;
             }
 
             /* Retry in N seconds */