Macro azure_core::ensure_eq

macro_rules! ensure_eq {
    ($left:expr, $right:expr, $kind:expr, $msg:literal $(,)?) => { ... };
    ($left:expr, $right:expr, $kind:expr, dicate $msg:expr $(,)?) => { ... };
    ($left:expr, $right:expr, $kind:expr, dicate $msg:expr, $($arg:tt)*) => { ... };
}

Return early with an error if two expressions are not equal to each other.