Corrected type casting in return value of wtp_add.
Corrected type casting in return value of wtp_add.

FossilOrigin-Name: ec958920e6ea5132ea215d69bd20f6bbd12aedc59af579c9cc3383865089a4f4
7u83/actube,7u83/actube,7u83/actube,7u83/actube,7u83/actube