do not log on stderr on MacOSX because that spams system log

modules/csync_owncloud.c

@@ -49,7 +49,7 @@
 #include "csync_log.h"
 
 #ifdef NDEBUG
-#define DEBUG_WEBDAV(x)
+#define DEBUG_WEBDAV(...)
 #else
 #define DEBUG_WEBDAV(...) CSYNC_LOG(CSYNC_LOG_PRIORITY_DEBUG, __VA_ARGS__)
 #endif

src/csync.c

@@ -964,7 +964,10 @@ void csync_log_cb( char *catName, int a_priority,
   if(log_cb) {
     (log_cb)(buf);
   } else {
+#ifndef __APPLE__
+    /* skip this output on apple to not spam the system log. */
     fprintf(stderr, "%s\n", buf);
+#endif
   }
 }
 #endif