v0.8.1: fixed unintended integer math in some buff icon fading logic

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/items/wands/WandOfLivingEarth.java

@@ -251,7 +251,7 @@ public class WandOfLivingEarth extends DamageWand {
 
 		@Override
 		public float iconFadePercent() {
-			return Math.max(0, (armorToGuardian() - armor) / armorToGuardian());
+			return Math.max(0, (armorToGuardian() - armor) / (float)armorToGuardian());
 		}
 
 		@Override

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/plants/Earthroot.java

@@ -125,7 +125,7 @@ public class Earthroot extends Plant {
 
 		@Override
 		public float iconFadePercent() {
-			return Math.max(0, (target.HT - level) / target.HT);
+			return Math.max(0, (target.HT - level) / (float) target.HT);
 		}
 		
 		@Override

core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/plants/Sungrass.java

@@ -124,7 +124,7 @@ public class Sungrass extends Plant {
 
 		@Override
 		public float iconFadePercent() {
-			return Math.max(0, (target.HT - level) / target.HT);
+			return Math.max(0, (target.HT - level) / (float)target.HT);
 		}
 		
 		@Override