Re: seekable stdin test failure on OS X

[Bruno Haible]

Hi Eric,

The 'e1' variable is not needed, I think. No standard specifies that errno
must be preserved across function calls:
  - C99 does not mention 'errno' in the description of fflush,
  - POSIX does, and says in 
http://www.opengroup.org/susv3/functions/xsh_chap02_03.html
    that "The value of errno should only be examined when it is indicated to
    be valid by a function's return value."

Bruno