fix phpinfo() output for iconv extension

(convert unicode values to string before outputting them)

ext/iconv/iconv.c

@@ -216,6 +216,9 @@ PHP_MINFO_FUNCTION(miconv)
 	zend_get_constant("ICONV_IMPL", sizeof("ICONV_IMPL")-1, &iconv_impl TSRMLS_CC);
 	zend_get_constant("ICONV_VERSION", sizeof("ICONV_VERSION")-1, &iconv_ver TSRMLS_CC);
 
+	convert_to_string(&iconv_impl);
+	convert_to_string(&iconv_ver);
+	
 	php_info_print_table_start();
 	php_info_print_table_row(2, "iconv support", "enabled");
 	php_info_print_table_row(2, "iconv implementation", Z_STRVAL(iconv_impl));