Windows x64 problems reading reactions

The win64 version of indigo has problems when reading of a reaction leads to an exception. When this happens all following attempts to read a valid reaction leads to an exception 'scanner: BufferScanner::read() error'.

Steps to reproduce:
open a query reaction by normal reaction reading and catch the exception. All so good so far:

try
m:= indigoLoadReactionFromFile('QueryReaction.rxn');
except
//
end

But now try to open the reaction by the correct function:
p: = indigoLoadQueryReactionFromFile('QueryReaction.rxn');
--> exception 'scanner: BufferScanner::read() error'
this gives an exception and all following attempts to read any reaction will fail by exception 'scanner: BufferScanner::read() error'.

This problem exists in x64 version.
The windows x32 version is OK and can normally process reaction after catching first exception.

[QueryReaction.zip](https://github.com/epam/Indigo/files/6150522/QueryReaction.zip)

Use the attached QueryReaction.zip and reproduce the sequence involving indigoLoadReactionFromFile followed by indigoLoadQueryReactionFromFile on Windows x64. Compare the x64 behavior with the stated-working x32 behavior; done means catching the first exception does not prevent the query reaction or later valid reactions from being read.

Written by the indexing model from the issue text.