table_display: only check width when non-zero

A width of 0 indicates that either pacman is not attached
to a tty or the user does not want line wrapping.  Either
way pacman should not fall back to the basic display.

Signed-off-by: Andrew Gregory <andrew.gregory.8@gmail.com>

src/pacman/util.c

@@ -640,7 +640,7 @@ static int table_display(const alpm_list_t *header,
 	totalwidth = table_calc_widths(first, rows, padding, totalcols,
 			&widths, &has_data);
 	/* return -1 if terminal is not wide enough */
-	if(totalwidth > cols) {
+	if(cols && totalwidth > cols) {
 		pm_printf(ALPM_LOG_WARNING,
 				_("insufficient columns available for table display\n"));
 		ret = -1;