[gnome-nibbles] Fix more incorrect license-related comments.

[Michael Catanzaro <mcatanzaro src gnome org>]

commit d4f639f18c0cf0376d4ac3beaadd39835cadffd9
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Thu Feb 18 19:05:09 2016 -0600

    Fix more incorrect license-related comments.

 src/boni.vala         |    2 +-
 src/nibbles-game.vala |    2 +-
 src/warp.vala         |    2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/src/boni.vala b/src/boni.vala
index a3412a6..7e6a4ce 100644
--- a/src/boni.vala
+++ b/src/boni.vala
@@ -16,7 +16,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-// This is a fairly literal translation of the LGPLv2+ original by
+// This is a fairly literal translation of the GPLv2+ original by
 // Sean MacIsaac, Ian Peters, Guillaume Béland.
 
 public enum BonusType
diff --git a/src/nibbles-game.vala b/src/nibbles-game.vala
index 7fe8fd8..4740465 100644
--- a/src/nibbles-game.vala
+++ b/src/nibbles-game.vala
@@ -16,7 +16,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-// This is a fairly literal translation of the LGPLv2+ original by
+// This is a fairly literal translation of the GPLv2+ original by
 // Sean MacIsaac, Ian Peters, Guillaume Béland.
 
 public enum GameStatus
diff --git a/src/warp.vala b/src/warp.vala
index 437c612..4836a4f 100644
--- a/src/warp.vala
+++ b/src/warp.vala
@@ -16,7 +16,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-// This is a fairly literal translation of the LGPLv2+ original by
+// This is a fairly literal translation of the GPLv2+ original by
 // Sean MacIsaac, Ian Peters, Guillaume Béland.
 
 public class Warp : Object