change dirty flag to false on update

fftma_module/gen/lib_src/chunk_array.c

@@ -38,6 +38,7 @@ void buffer_flush(chunk_array_t* chunk_array, buffer_t* buffer) {
         int mod = get_mod(chunk_array, buffer->init_pos);
         fseek(chunk_array->fp, buffer->init_pos * sizeof(double), SEEK_SET);
         fwrite(buffer->data, sizeof(double), mod, chunk_array->fp);
+        buffer->dirty = false;
     }
 }