6417483 LD_DEBUG fails after putback for 1085341

[casper....@sun.com]

Author: casper
Repository: /hg/onnv/onnv-gate
Revision: 949cc3aa69ff1c306204641963abcdde71a69135
Log message:
6417483 LD_DEBUG fails after putback for 1085341

Files:
        update: usr/src/lib/libc/port/stdio/flush.c