[vala] Fix crash in scanner

[Jürg Billeter <juergbi src gnome org>]

commit 482ed4c418bea7ebad269c1c91c9e174147f8f1e
Author: Jürg Billeter <j bitron ch>
Date:   Fri Jul 10 23:50:08 2009 +0100

    Fix crash in scanner

 vala/valascanner.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/vala/valascanner.vala b/vala/valascanner.vala
index cdac128..6f09a13 100644
--- a/vala/valascanner.vala
+++ b/vala/valascanner.vala
@@ -1069,7 +1069,7 @@ public class Vala.Scanner {
 			current++;
 			column++;
 		}
-		if (bol && current[0] == '#') {
+		if (bol && current < end && current[0] == '#') {
 			pp_directive ();
 			return true;
 		}