10805 Fix for 10687 can be improved

@@ -99,14 +99,14 @@
                 char            *fmt, ...);
 void rds_dprintf3(
                 char            *name,
                 char            *fmt, ...);
 #else
-#define RDS_DPRINTF_INTR(...)
-#define RDS_DPRINTF5(...)
-#define RDS_DPRINTF4(...)
-#define RDS_DPRINTF3(...)
+#define RDS_DPRINTF_INTR(...)   (void)(0)
+#define RDS_DPRINTF5(...)       (void)(0)
+#define RDS_DPRINTF4(...)       (void)(0)
+#define RDS_DPRINTF3(...)       (void)(0)
 #endif
 
 #define RDS_DPRINTF2    rds_dprintf2
 #define RDS_DPRINTF1    rds_dprintf1
 #define RDS_DPRINTF0    rds_dprintf0