src: add fflush() to SnapshotData::ToFile()

Refs: #46491 (comment) PR-URL: #46531 Reviewed-By: Joyee Cheung <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Tobias Nießen <[email protected]> Reviewed-By: Luigi Pinca <[email protected]>

Author: addaleax

src/node_snapshotable.cc

@@ -860,6 +860,7 @@ void SnapshotData::ToBlob(FILE* out) const{
 size_t num_written = fwrite(w.sink.data(), w.sink.size(), 1, out);
 CHECK_EQ(num_written, 1);
  w.Debug("SnapshotData::ToBlob() Wrote %d bytes\n", written_total);
+CHECK_EQ(fflush(out), 0);
 }
 
 boolSnapshotData::FromBlob(SnapshotData* out, FILE* in){