less: Fix issues with the map file on Windows. See the comment in the code for more information. Also, only wrap the opening of the map file in a try/except clause, since we want to catch the situation where the map file is missing only.

#!/bin/sh

CHEF_DIR=`dirname $0`
if `hash readlink 2>&-`; then
    LINKED_EXE=`readlink $0`
    if [ -n "$LINKED_EXE" ]; then
        CHEF_DIR=`dirname $LINKED_EXE`
    fi
fi
python $CHEF_DIR/../chef.py $@