std: Fix thread_local! in non-PIE binaries

One of the parameters to the magical "register a thread-local destructor"
function is called `__dso_handle` and largely just passed along (this seems to
be what other implementations do). Currently we pass the *value* of this symbol,
but apparently the correct piece of information to pass is the *address* of the
symbol.

In a PIE binary the symbol actually contains an address to itself which is why
we've gotten away with what we're doing as long as we have. In a non-PIE binary
the symbol contains the address `NULL`, causing a segfault in the runtime
library if it keeps going.

Closes #24445

src/libstd/thread/local.rs

@@ -373,7 +373,7 @@ mod imp {
                                       arg: *mut u8,
                                       dso_handle: *mut u8) -> libc::c_int;
             mem::transmute::<*const (), F>(__cxa_thread_atexit_impl)
-            (dtor, t, __dso_handle);
+            (dtor, t, &__dso_handle as *const _ as *mut _);
             return
         }