Avoid warnings in test cases.

The posix/tst-rfc3484* test cases caused warnings in newer gccs
because the unused but copied sin_zero part of sockaddr_in wasn't
explicitly initialized.

ChangeLog

@@ -1,5 +1,10 @@
 2009-07-23  Ulrich Drepper  <drepper@redhat.com>
 
+	* posix/tst-rfc3484.c (do_test): Initialize entire sockaddr_in
+	structure before copying it to avoid warning.
+	* posix/tst-rfc3484-2.c (do_test): Likewise.
+	* posix/tst-rfc3484-3.c (do_test): Likewise.
+
 	[BZ #10416]
 	* include/unistd.h: Make header file suitable for C++ test cases.
 	Patch by Duncan Simpson <dps@simpson.demon.co.uk>.

posix/tst-rfc3484-2.c

@@ -82,6 +82,8 @@ do_test (void)
   struct sockaddr_in so1;
   so1.sin_family = AF_INET;
   so1.sin_addr.s_addr = h (0xc0a85f19);
+  /* Clear the rest of the structure to avoid warnings.  */
+  memset (so1.sin_zero, '\0', sizeof (so1.sin_zero));
 
   struct sockaddr_in sa1;
   sa1.sin_family = AF_INET;

posix/tst-rfc3484-3.c

@@ -113,6 +113,8 @@ do_test (void)
   struct sockaddr_in so;
   so.sin_family = AF_INET;
   so.sin_addr.s_addr = h (0x0aa85f19);
+  /* Clear the rest of the structure to avoid warnings.  */
+  memset (so.sin_zero, '\0', sizeof (so.sin_zero));
 
   for (int i = 0; i < naddrs; ++i)
     {

posix/tst-rfc3484.c

@@ -102,6 +102,8 @@ do_test (void)
   struct sockaddr_in so;
   so.sin_family = AF_INET;
   so.sin_addr.s_addr = h (0xc0a85f19);
+  /* Clear the rest of the structure to avoid warnings.  */
+  memset (so.sin_zero, '\0', sizeof (so.sin_zero));
 
   for (int i = 0; i < naddrs; ++i)
     {