[PATCH 6/6] mcstrans: silence -Wextra-semi-stmt warning

[Nicolas Iooss <nicolas.iooss@xxxxxxx>]

On Ubuntu 20.04, when building with clang -Werror -Wextra-semi-stmt
(which is not the default build configuration), the compiler reports:

      mcstransd.c:72:35: error: empty expression statement has no effect;
      remove unnecessary ';' to silence this warning
      [-Werror,-Wextra-semi-stmt]
              log_debug("%s\n", "cleanup_exit");
                                               ^

Replace the empty log_debug substitution with a do { ... } while (0)
construction to silence this warning.

Signed-off-by: Nicolas Iooss <nicolas.iooss@xxxxxxx>
---
 mcstrans/src/mcstrans.c  | 2 +-
 mcstrans/src/mcstransd.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/mcstrans/src/mcstrans.c b/mcstrans/src/mcstrans.c
index c0fc14e40d2f..e92dfddb0d20 100644
--- a/mcstrans/src/mcstrans.c
+++ b/mcstrans/src/mcstrans.c
@@ -43,7 +43,7 @@
 #ifdef DEBUG
 #define log_debug(fmt, ...) fprintf(stderr, fmt, __VA_ARGS__)
 #else
-#define log_debug(fmt, ...) ;
+#define log_debug(fmt, ...) do {} while (0)
 #endif
 
 static unsigned int maxbit=0;
diff --git a/mcstrans/src/mcstransd.c b/mcstrans/src/mcstransd.c
index 07c052fd4998..59c152e73be1 100644
--- a/mcstrans/src/mcstransd.c
+++ b/mcstrans/src/mcstransd.c
@@ -40,7 +40,7 @@
 //#define log_debug(fmt, ...) syslog(LOG_DEBUG, fmt, __VA_ARGS__)
 #define log_debug(fmt, ...) fprintf(stderr, fmt, __VA_ARGS__)
 #else
-#define log_debug(fmt, ...) ;
+#define log_debug(fmt, ...) do {} while (0)
 #endif
 
 extern int init_translations(void);
-- 
2.32.0