tracer: use a define for tick -> integer conversion

include/vlc_tracer.h

@@ -52,6 +52,8 @@ typedef union
     const char *string;
 } vlc_tracer_value_t;
 
+#define VLC_TRACER_TIME_FROM_TICK(ts) NS_FROM_VLC_TICK(ts)
+
 /**
  * Trace message
  */
@@ -100,7 +102,7 @@ VLC_API void vlc_tracer_Trace(struct vlc_tracer *tracer, ...);
 static inline struct vlc_tracer_entry vlc_tracer_entry_FromTick(const char *key, vlc_tick_t value)
 {
     vlc_tracer_value_t tracer_value;
-    tracer_value.integer = NS_FROM_VLC_TICK(value);
+    tracer_value.integer = VLC_TRACER_TIME_FROM_TICK(value);
     struct vlc_tracer_entry trace = { key, tracer_value, VLC_TRACER_INT };
     return trace;
 }