Index: Zend/zend.c
===================================================================
RCS file: /repository/ZendEngine2/zend.c,v
retrieving revision 1.416
diff -u -p -r1.416 zend.c
--- Zend/zend.c	19 May 2008 19:39:25 -0000	1.416
+++ Zend/zend.c	20 May 2008 15:00:14 -0000
@@ -1004,19 +1004,29 @@ static void unicode_globals_dtor(zend_un
 	if (unicode_globals->root_search) {
 		usearch_close(unicode_globals->root_search);
 	}
-	if (unicode_globals->fallback_encoding_conv) {
+	if (unicode_globals->fallback_encoding_conv &&
+		unicode_globals->fallback_encoding_conv != unicode_globals->utf8_conv &&
+		unicode_globals->fallback_encoding_conv != unicode_globals->ascii_conv) {
 		ucnv_close(unicode_globals->fallback_encoding_conv);
 	}
-	if (unicode_globals->runtime_encoding_conv) {
+	if (unicode_globals->runtime_encoding_conv &&
+		unicode_globals->runtime_encoding_conv != unicode_globals->utf8_conv &&
+		unicode_globals->runtime_encoding_conv != unicode_globals->ascii_conv) {
 		ucnv_close(unicode_globals->runtime_encoding_conv);
 	}
-	if (unicode_globals->output_encoding_conv) {
+	if (unicode_globals->output_encoding_conv &&
+		unicode_globals->output_encoding_conv != unicode_globals->utf8_conv &&
+		unicode_globals->output_encoding_conv != unicode_globals->ascii_conv) {
 		ucnv_close(unicode_globals->output_encoding_conv);
 	}
-	if (unicode_globals->script_encoding_conv) {
+	if (unicode_globals->script_encoding_conv &&
+		unicode_globals->script_encoding_conv != unicode_globals->utf8_conv &&
+		unicode_globals->script_encoding_conv != unicode_globals->ascii_conv) {
 		ucnv_close(unicode_globals->script_encoding_conv);
 	}
-	if (unicode_globals->http_input_encoding_conv) {
+	if (unicode_globals->http_input_encoding_conv &&
+		unicode_globals->http_input_encoding_conv != unicode_globals->utf8_conv &&
+		unicode_globals->http_input_encoding_conv != unicode_globals->ascii_conv) {
 		ucnv_close(unicode_globals->http_input_encoding_conv);
 	}
 	if (unicode_globals->utf8_conv) {