[anjuta] mk-project: Prevent a crash

[Sebastien Granjoux <sgranjoux src gnome org>]

commit 52e41ffb2d6d1b2c99ac30a1278e644b921c3906
Author: Juan Pablo Ugarte <juanpablougarte gmail com>
Date:   Fri Apr 19 22:20:03 2013 +0200

    mk-project: Prevent a crash

 plugins/mk-project/mk-project.c | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/plugins/mk-project/mk-project.c b/plugins/mk-project/mk-project.c
index e2d178b..3c5b889 100644
--- a/plugins/mk-project/mk-project.c
+++ b/plugins/mk-project/mk-project.c
@@ -667,6 +667,8 @@ mkp_project_get_variable_token (MkpProject *project, AnjutaToken *variable)
 
        length = anjuta_token_get_length (variable);
        string = anjuta_token_get_string (variable);
+       if ((length == 0) || (string == NULL)) return NULL;
+
        if (string[1] == '(')
        {
                name = g_strndup (string + 2, length - 3);