Call-time pass-by-reference deprecated warning

Warning: Call-time pass-by-reference has been deprecated; If you would like to pass it by reference, modify the declaration of [runtime function name](). If you would like to enable call-time pass-by-reference, you can set allow_call_time_pass_reference to true in your INI file
in C:\wamps2\www\drupal\sites\all\modules\weblinks\weblinks.module on line 323
in C:\wamps2\www\drupal\sites\all\modules\weblinks\weblinks.module on line 1507


[suspicious causes but actually not]
1. move module weblinks from dru\modules\ to dru\sites\all\modules\
2. weblinks module modification

[cause]
call-by-ref is done compile-time(at function declaration),
there is no need to use f1(&$parameter) at calling