[Fix] dirdyn results was no more printed, changed in mbs_dirdyn.c

MBsysC/mbs_common/mbs_module/mbs_dirdyn.c

@@ -598,11 +598,12 @@ void mbs_dirdyn_finish(MbsDirdyn* dd, MbsData* mbs_data){
 
 
 int mbs_dirdyn_write_buffers(MbsDirdyn* dd){
-    int i;
+    int i, err =0;
     for (i=0 ; i < dd->bufferNb ; i++){
-        return mbs_buffer_write(dd->buffers[i]);
+        err = mbs_buffer_write(dd->buffers[i]);
+        if (err < 0) { return err; }
     }   
-    return 0;
+    return err;
 }
 
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