Remove 'unused variable' warning.

1 files changed, 4 insertions, 4 deletions

diff --git a/hugin.c b/hugin.c
index 245a27d..a24a929 100644
--- a/hugin.c
+++ b/hugin.c
@@ -97,10 +97,10 @@ void mutex_unlock(mutex_t *mutex)
 
 #define MUTEX_INIT_VALUE 0
 typedef int mutex_t;
-void mutex_init(mutex_t *mutex) {}
-void mutex_close(mutex_t *mutex) {}
-void mutex_lock(mutex_t *mutex) {}
-void mutex_unlock(mutex_t *mutex) {}
+void mutex_init(mutex_t *mutex) { (void)mutex; }
+void mutex_close(mutex_t *mutex) { (void)mutex; }
+void mutex_lock(mutex_t *mutex) { (void)mutex; }
+void mutex_unlock(mutex_t *mutex) { (void)mutex; }
 
 #endif/*WITH_HUG_MUTEX*/