initialise term->paste_len during initialisation, and indeed looking
at the code confirms this. I'm puzzled as to why valgrind didn't
spot this in pterm, though, since it's all in cross-platform code!
[originally from svn r2494]
strcpy(term->id_string, "\033[?6c");
term->last_blink = term->last_tblink = 0;
term->paste_buffer = NULL;
+ term->paste_len = 0;
term->last_paste = 0;
bufchain_init(&term->inbuf);
bufchain_init(&term->printer_buf);