record: fixed file handle not free

Signed-off-by: yanlonglong <yanlonglong@kylinos.cn>
Acked-by: Frediano Ziglio <freddy77@gmail.com>

server/red-record-qxl.cpp

@@ -874,6 +874,7 @@ RedRecord *red_record_new(const char *filename)
     }
 
     if (fwrite(header, sizeof(header)-1, 1, f) != 1) {
+        fclose(f);
         spice_error("failed to write replay header");
     }