ws2_32: Manage shorter length for SO_LINGER.

dlls/ws2_32/socket.c

@@ -1541,7 +1541,8 @@ int WINAPI getsockopt( SOCKET s, int level, int optname, char *optval, int *optl
             /* struct linger and LINGER have different sizes */
             if (*optlen < sizeof(LINGER) || !optval)
             {
-                SetLastError(WSAEFAULT);
+                if (optval) memset( optval, 0, *optlen );
+                SetLastError( WSAEFAULT );
                 return SOCKET_ERROR;
             }
 
@@ -2842,6 +2843,11 @@ int WINAPI setsockopt( SOCKET s, int level, int optname, const char *optval, int
             return server_setsockopt( s, IOCTL_AFD_WINE_SET_SO_KEEPALIVE, (char *)&value, sizeof(value) );
 
         case SO_LINGER:
+            if (optlen < sizeof(LINGER) || !optval)
+            {
+                SetLastError( WSAEFAULT );
+                return SOCKET_ERROR;
+            }
             return server_setsockopt( s, IOCTL_AFD_WINE_SET_SO_LINGER, optval, optlen );
 
         case SO_OOBINLINE:

dlls/ws2_32/tests/sock.c

@@ -1171,6 +1171,7 @@ static void test_set_getsockopt(void)
     {
         {AF_INET, SOCK_DGRAM, SOL_SOCKET, SO_BROADCAST,  TRUE, {1, 1, 4}, {0, 0xdead0001, 0}, TRUE, TRUE},
         {AF_INET, SOCK_STREAM, SOL_SOCKET, SO_DONTLINGER, TRUE, {1, 1, 4}, {0, 0xdead0001, 0}, TRUE, TRUE},
+        {AF_INET, SOCK_STREAM, SOL_SOCKET, SO_LINGER, FALSE, {1, 2, 4}, {0xdeadbe00, 0xdead0000}, TRUE},
         {AF_INET, SOCK_STREAM, SOL_SOCKET, SO_KEEPALIVE, TRUE, {1, 1, 1}, {0}, TRUE},
         {AF_INET, SOCK_STREAM, SOL_SOCKET, SO_DONTROUTE, TRUE, {1, 1, 1}, {0}, TRUE},
         {AF_INET, SOCK_STREAM, SOL_SOCKET, SO_RCVTIMEO, FALSE, {1, 2, 4}, {0}, TRUE},