[glib] Silence some uncontroversial warnings

[Руслан Ижбулатов <ruslanizhb src gnome org>]

commit 42ddcc6ff22c66f1ded9d7a3879df39988531878
Author: Руслан Ижбулатов <lrn1986 gmail com>
Date:   Sat Aug 2 12:35:43 2014 +0000

    Silence some uncontroversial warnings
    
    https://bugzilla.gnome.org/show_bug.cgi?id=711547

 gio/gresolver.c |    2 ++
 glib/gmain.c    |    1 +
 glib/gutils.c   |    3 ++-
 3 files changed, 5 insertions(+), 1 deletions(-)
---
diff --git a/gio/gresolver.c b/gio/gresolver.c
index 7c69d1a..e73ef0e 100644
--- a/gio/gresolver.c
+++ b/gio/gresolver.c
@@ -294,7 +294,9 @@ handle_ip_address (const char  *hostname,
                    GError     **error)
 {
   GInetAddress *addr;
+#ifndef G_OS_WIN32
   struct in_addr ip4addr;
+#endif
 
   addr = g_inet_address_new_from_string (hostname);
   if (addr)
diff --git a/glib/gmain.c b/glib/gmain.c
index 45ed402..b68b65c 100644
--- a/glib/gmain.c
+++ b/glib/gmain.c
@@ -4012,6 +4012,7 @@ g_main_context_poll (GMainContext *context,
   if (n_fds || timeout != 0)
     {
 #ifdef G_MAIN_POLL_DEBUG
+      poll_timer = NULL;
       if (_g_main_poll_debug)
        {
          g_print ("polling context=%p n=%d timeout=%d\n",
diff --git a/glib/gutils.c b/glib/gutils.c
index e89f028..8fd045a 100644
--- a/glib/gutils.c
+++ b/glib/gutils.c
@@ -1796,7 +1796,8 @@ g_win32_get_system_data_dirs_for_module (void (*address_of_function)(void))
   gchar **retval;
   gchar *p;
   gchar *exe_root;
-      
+
+  hmodule = NULL;
   if (address_of_function)
     {
       G_LOCK (g_utils_global);