Corrected warnings found by splint.

bacnet-stack/include/bactext.h

@@ -54,43 +54,43 @@ extern "C" {
 #endif /* __cplusplus */
 
     const char *bactext_confirmed_service_name(
-        int index);
+        unsigned index);
     const char *bactext_unconfirmed_service_name(
-        int index);
+        unsigned index);
     const char *bactext_application_tag_name(
-        int index);
+        unsigned index);
     const char *bactext_object_type_name(
-        int index);
+        unsigned index);
     const char *bactext_property_name(
-        int index);
+        unsigned index);
     const char *bactext_engineering_unit_name(
-        int index);
+        unsigned index);
     const char *bactext_reject_reason_name(
-        int index);
+        unsigned index);
     const char *bactext_abort_reason_name(
-        int index);
+        unsigned index);
     const char *bactext_error_class_name(
-        int index);
+        unsigned index);
     const char *bactext_error_code_name(
-        int index);
+        unsigned index);
     unsigned bactext_property_id(
         const char *name);
     const char *bactext_month_name(
-        int index);
+        unsigned index);
     const char *bactext_week_of_month_name(
-        int index);
+        unsigned index);
     const char *bactext_day_of_week_name(
-        int index);
+        unsigned index);
     const char *bactext_event_state_name(
-        int index);
+        unsigned index);
     const char *bactext_binary_present_value_name(
-        int index);
+        unsigned index);
     const char *bactext_reliability_name(
-        int index);
+        unsigned index);
     const char *bactext_device_status_name(
-        int index);
+        unsigned index);
     const char *bactext_segmentation_name(
-        int index);
+        unsigned index);
 
 
 #ifdef __cplusplus