Stop storing a reference in a lock guard

r3/src/r3_port_std/src/threading_windows.rs

Lines 234 to 237 in 57184ad

    
           pub struct MutexGuard<'a, T: ?Sized> { 
        
               data: &'a mut T, 
        
               locked: &'a AtomicBool, 
        
           }

The fix is ready, but I'm not quite sure how to describe the motivations for the change.

	pub struct MutexGuard<'a, T: ?Sized> {
	data: &'a mut T,
	locked: &'a AtomicBool,
	}