Do not close stdout for scriptlets.

--- ./lib/psm.c.orig	2005-12-14 18:59:10.000000000 +0000
+++ ./lib/psm.c	2006-02-24 11:46:54.000000000 +0000
@@ -829,7 +837,7 @@ static rpmRC runScript(rpmpsm psm, Heade
 		xx = Fclose (out);
 	    if (sfdno > STDERR_FILENO)
 		xx = Fclose (scriptFd);
-	    else {
+	    else if (Fileno(out) > STDERR_FILENO) {
 /*@-usereleased@*/
 		xx = Fclose(out);
 /*@=usereleased@*/