freetdm: fix win compilation

diff --git a/libs/freetdm/src/include/private/ftdm_types.h b/libs/freetdm/src/include/private/ftdm_types.h
index ba6956344dee62b0f8dce24bc1b7db1c0fcae805..843938829820753acbbeea9e88998e12ae4d1ea1 100644 (file)
--- a/libs/freetdm/src/include/private/ftdm_types.h
+++ b/libs/freetdm/src/include/private/ftdm_types.h
@@ -376,7 +376,7 @@ struct ftdm_iterator {
        unsigned int allocated:1;
        union {
                struct {
-                       int32_t index;
+                       uint32_t index;
                        const ftdm_span_t *span;
                } chaniter;
                ftdm_hash_iterator_t *hashiter;