v0.2.3: buff immunity collection fixes

src/com/shatteredpixel/shatteredpixeldungeon/actors/buffs/ToxicImbue.java

@@ -59,7 +59,7 @@ public class ToxicImbue extends Buff {
         return "Imbued with Toxicity";
     }
 
-    static {
+    {
         immunities.add( ToxicGas.class );
         immunities.add( Poison.class );
     }