multimedia/termplay: Unbreak build with Rust 1.40.0 (D22843)

error[E0596]: cannot borrow `**func` as mutable, as it is behind a `*const` pointer
   --> .../cargo-crates/gstreamer-0.11.2/src/iterator.rs:439:8
    |
435 |     let func = func as *const &mut (FnMut(T) -> bool);
    |         ---- help: consider changing this to be a mutable pointer: `*mut &mut dyn std::ops::FnMut(T) -> bool`
...
439 |     if (*func)(value) {
    |        ^^^^^^^ `func` is a `*const` pointer, so the data it refers to cannot be borrowed as mutable

error[E0596]: cannot borrow `**func` as mutable, as it is behind a `*const` pointer
   --> .../cargo-crates/gstreamer-0.11.2/src/iterator.rs:455:5
    |
451 |     let func = func as *const &mut (FnMut(T));
    |         ---- help: consider changing this to be a mutable pointer: `*mut &mut dyn std::ops::FnMut(T)`
...
455 |     (*func)(value);
    |     ^^^^^^^ `func` is a `*const` pointer, so the data it refers to cannot be borrowed as mutable

error[E0596]: cannot borrow `**func` as mutable, as it is behind a `*const` pointer
   --> .../cargo-crates/gstreamer-0.11.2/src/iterator.rs:473:11
    |
467 |     let func = func as *const &mut (FnMut(U, T) -> Result<U, U>);
    |         ---- help: consider changing this to be a mutable pointer: `*mut &mut dyn std::ops::FnMut(U, T) -> std::result::Result<U, U>`
...
473 |     match (*func)(accum.take().unwrap(), value) {
    |           ^^^^^^^ `func` is a `*const` pointer, so the data it refers to cannot be borrowed as mutable

error: aborting due to 3 previous errors

0 files changed, 0 insertions, 0 deletions