8215026: Incorrect amount of memory unmapped with ImageFileReader::close()
Summary: Use map_size() instead of _index_size as the amount of memory to be unmapped while closing an image file
Reviewed-by: alanb, jlaskey
Welcome to the JDK!
===================
For information about building the JDK, including how to retrieve all
of the source code, please see either of these files:
* doc/building.html (html version)
* doc/building.md (markdown version)
See http://openjdk.java.net/ for more information about the OpenJDK
Community and the JDK.