[vala] tests: Fix "static const" warning

[Rico Tzschichholz <ricotz src gnome org>]

commit 4d0bf911a4eaf32b523c3e8fcc53ff674db57936
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Wed Jun 8 20:17:04 2016 +0200

    tests: Fix "static const" warning

 tests/basic-types/bug648364.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/tests/basic-types/bug648364.vala b/tests/basic-types/bug648364.vala
index 7ee2340..1a41fd4 100644
--- a/tests/basic-types/bug648364.vala
+++ b/tests/basic-types/bug648364.vala
@@ -1,4 +1,4 @@
-static const int foo = 3;
+const int foo = 3;
 
 void main() {
         int? bar = foo;