[redirect memory] Bug fix to pin/redirect_memory.cc
[redirect memory] Bug fix to pin/redirect_memory.cc

victorisildur/Graphite,8l/Graphite,8l/Graphite,nkawahara/Graphite,fhijaz/Graphite,victorisildur/Graphite,mit-carbon/Graphite,mit-carbon/Graphite,nkawahara/Graphite,nkawahara/Graphite,8l/Graphite,mit-carbon/Graphite,victorisildur/Graphite,nkawahara/Graphite,fhijaz/Graphite,fhijaz/Graphite,victorisildur/Graphite,8l/Graphite,fhijaz/Graphite,mit-carbon/Graphite