log: make debug_cond() function like

Change debug_cond() such that it can be used instead of a function like
debug().
Signed-off-by: NHeinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: NSimon Glass <sjg@chromium.org>

include/log.h

@@ -217,10 +217,9 @@ static inline int _log_nop(enum log_category_t cat, enum log_level_t level,
 #if !_DEBUG && CONFIG_IS_ENABLED(LOG)
 
 #define debug_cond(cond, fmt, args...)			\
-	do {						\
-		if (1)					\
+({							\
 	log(LOG_CATEGORY, LOGL_DEBUG, fmt, ##args);	\
-	} while (0)
+})
 
 #else /* _DEBUG */
 
@@ -230,10 +229,10 @@ static inline int _log_nop(enum log_category_t cat, enum log_level_t level,
  * optimization.
  */
 #define debug_cond(cond, fmt, args...)		\
-	do {						\
+({						\
 	if (cond)				\
 		printf(pr_fmt(fmt), ##args);	\
-	} while (0)
+})
 
 #endif /* _DEBUG */