fixed segfault when munging empty scripts

 * empty scripts are SciTECO scripts with an Hash-Bang line but no
   EOL characters.
   They are simply ignored now.
 * A test case cannot be added since 1) it's hard to create the test
   script with AT_DATA - we'd have to add it to the repo instead.
   2) If the bug is not occurring, SciTECO starts into interactive mode
   which cannot be inhibited unless the script is __not__ empty.
 * Skipping the Hash-Bang line is optimized now, saving one iteration
   of the macro just to find out it contains no CR (which is
   the most common case).

0 files changed, 0 insertions, 0 deletions