cr_cascade_set_sheet: allow a_sheet=NULL
Cascade sheets are initially NULL
, which is valid. However, once set to a non-NULL stylesheet, the current API doesn't allow to set it back to NULL
. This patch changes that.
Cascade sheets are initially NULL
, which is valid. However, once set to a non-NULL stylesheet, the current API doesn't allow to set it back to NULL
. This patch changes that.