migration: close socket QEMUFile from socket_close

The common suffix now is process_incoming_migration+qemu_fclose.

Reviewed-by: Orit Wasserman <owasserm@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/savevm.c b/savevm.c
index 0ab1ad4..cdad3ad 100644
--- a/savevm.c
+++ b/savevm.c
@@ -213,6 +213,7 @@
 static int socket_close(void *opaque)
 {
     QEMUFileSocket *s = opaque;
+    closesocket(s->fd);
     g_free(s);
     return 0;
 }