[gcc r13-292] [Ada] Suppress warning in g-sthcso for non-unix platforms

[Pierre-Marie de Rodat <pmderodat@gcc.gnu.org>]

https://gcc.gnu.org/g:02b8770a444bef9bb9a3dc23747e9b257f3af087

commit r13-292-g02b8770a444bef9bb9a3dc23747e9b257f3af087
Author: Johannes Kliemann <kliemann@adacore.com>
Date:   Fri Jan 28 14:54:21 2022 +0000

    [Ada] Suppress warning in g-sthcso for non-unix platforms
    
    gcc/ada/
    
            * libgnat/g-sthcso.adb: Suppress warning about unneeded use type
            clause.

Diff:
---
 gcc/ada/libgnat/g-sthcso.adb | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/gcc/ada/libgnat/g-sthcso.adb b/gcc/ada/libgnat/g-sthcso.adb
index f045c02b99e..fd99eebbdb7 100644
--- a/gcc/ada/libgnat/g-sthcso.adb
+++ b/gcc/ada/libgnat/g-sthcso.adb
@@ -41,7 +41,12 @@ function C_Socketpair
    Protocol : C.int;
    Fds      : not null access Fd_Pair) return C.int
 is
+   --  This use type clause is not required on all platforms
+   --  using this implementation. So we suppress the warning
+   --  for the platforms that already use this type.
+   pragma Warnings (Off, "use clause for type *");
    use type C.char_array;
+   pragma Warnings (On, "use clause for type *");
 
    L_Sock, C_Sock, P_Sock : C.int := Failure;
    --  Listening socket, client socket and peer socket