libstdc++: Remove redundant return statement after static_assert(false)

Jakub's fix for PR c++/91388 means that we don't need an unreachable
return statement after static_assert(false).

libstdc++-v3/ChangeLog:

	* include/bits/atomic_wait.h (__wait_args::_M_setup_wait):
	Remove unreachable return statement.

Reviewed-by: Tomasz Kamiński <tkaminsk@redhat.com>

diff --git a/libstdc++-v3/include/bits/atomic_wait.h b/libstdc++-v3/include/bits/atomic_wait.h
index 10f4f91346762c36dead6fbc1f75772159c13a93..b6240a95370ffce36daf1682b8a7238a172c442c 100644 (file)
--- a/libstdc++-v3/include/bits/atomic_wait.h
+++ b/libstdc++-v3/include/bits/atomic_wait.h
@@ -226,10 +226,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
              else if constexpr (sizeof(_Tp) == sizeof(__UINT64_TYPE__))
                return __builtin_bit_cast(_Tp, (__UINT64_TYPE__)_M_old);
              else
-               {
-                 static_assert(false); // Unsupported size
-                 return {};
-               }
+               static_assert(false); // Unsupported size
            }
 
          if constexpr (!__platform_wait_uses_type<_Tp>)