[ewg] [OPENSM] use standard varargs syntax in macro OSM_LOG()

[Stan C. Smith]

Signed-off-by: Stan Smith (stan.smith at intel.com)

diff --git a/opensm/include/opensm/osm_log.h b/opensm/include/opensm/osm_log.h
index 20999d9..135e752 100644
--- a/opensm/include/opensm/osm_log.h
+++ b/opensm/include/opensm/osm_log.h
@@ -390,10 +390,10 @@ extern void osm_log_msg_box(osm_log_t *log, osm_log_level_t level,
 extern void osm_log_raw(IN osm_log_t * const p_log,
 	    IN const osm_log_level_t verbosity, IN const char *p_buf);
 
-#define OSM_LOG(log, level, fmt, arg...) do { \
-		if (osm_log_is_active(log, (level))) \
-			osm_log(log, level, "%s: " fmt, __func__, ##arg); \
-	} while (0)
+#define OSM_LOG(log, level, fmt, ...) do { \
+	if (osm_log_is_active(log, (level))) \
+		osm_log(log, level, "%s: " fmt, __func__, ## __VA_ARGS__); \
+} while (0)
 
 #define OSM_LOG_MSG_BOX(log, level, msg) \
 		osm_log_msg_box(log, level, __func__, msg)
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