Fix a bug in get_line_from_file.  If the length of the line is (GROWBY * n) +
GROWBY - 1, then it writes the null character just after the buffer.  Yipe.
Fix thanks to Matt Kraai <kraai@alumni.carnegiemellon.edu> Thanks Matt!
 -Erik
diff --git a/utility.c b/utility.c
index 3dedc2c..a15ae68 100644
--- a/utility.c
+++ b/utility.c
@@ -1616,7 +1616,7 @@
 		if (ch == EOF)
 			break;
 		/* grow the line buffer as necessary */
-		if (idx > linebufsz-1)
+		if (idx > linebufsz-2)
 			linebuf = realloc(linebuf, linebufsz += GROWBY);
 		linebuf[idx++] = (char)ch;
 		if ((char)ch == '\n')