Running some code under valgrind, I think I came across a memory 
allocation error. In 2.4, in src/header.c, line 180, it currently is:

sw->index_names = (const char **)emalloc( sizeof(char *) + 
(1+index_count) );

But shouldn't the size of the emalloc be sizeof(char*)*(1+index_count)?

Thanks,

Mark