Set pending_signals to 1 in w32term.c's read-socket hook.

 src/w32term.c (w32_read_socket): Set pending_signals to 1, like
 xterm.c does.  Reported by Daniel Colascione <dancol@dancol.org>.

src/ChangeLog

 2012-09-17  Eli Zaretskii  <eliz@gnu.org>
+	* w32term.c (w32_read_socket): Set pending_signals to 1, like
+	xterm.c does.  Reported by Daniel Colascione <dancol@dancol.org>.
+
 	* ralloc.c (r_alloc_init) [!SYSTEM_MALLOC]: Initialize
 	__malloc_extra_blocks to 32 instead of 64, like alloc.c did in
 	emacs_blocked_malloc, now deleted.

src/w32term.c

@@ -4162,6 +4162,7 @@ w32_read_socket (struct terminal *terminal, int expected,
   if (interrupt_input_blocked)
     {
       interrupt_input_pending = 1;
+      pending_signals = 1;
       return -1;
     }