fix some problems with gson, use hashCode in Enchantment and Statistic

src/main/java/de/bixilon/minosoft/ServerListPing.java

@@ -14,7 +14,6 @@
 package de.bixilon.minosoft;
 
 import com.google.gson.JsonObject;
-import com.google.gson.JsonParseException;
 import de.bixilon.minosoft.game.datatypes.TextComponent;
 public class ServerListPing {
     final JsonObject raw;
@@ -46,7 +45,7 @@ public class ServerListPing {
     public TextComponent getMotd() {
         try {
             return new TextComponent(raw.getAsJsonObject("description"));
-        } catch (JsonParseException ignored) {
+        } catch (Exception ignored) {
         }
         return new TextComponent(raw.get("description").getAsString());
     }

src/main/java/de/bixilon/minosoft/game/datatypes/TextComponent.java

@@ -30,7 +30,7 @@ public class TextComponent {
         }
         try {
             this.json = JsonParser.parseString(raw).getAsJsonObject();
-        } catch (IllegalStateException e) {
+        } catch (Exception e) {
             // not a text component, is a legacy string
             this.json = new JsonObject();
             JsonArray extra = new JsonArray();

src/main/java/de/bixilon/minosoft/game/datatypes/objectLoader/enchantments/Enchantment.java

@@ -35,11 +35,19 @@ public class Enchantment {
         return String.format("%s:%s", getMod(), getIdentifier());
     }
 
+    @Override
+    public int hashCode() {
+        return mod.hashCode() * identifier.hashCode();
+    }
+
     @Override
     public boolean equals(Object obj) {
         if (super.equals(obj)) {
             return true;
         }
+        if (hashCode() != obj.hashCode()) {
+            return false;
+        }
         Enchantment their = (Enchantment) obj;
         return getIdentifier().equals(their.getIdentifier()) && getMod().equals(their.getMod());
     }

src/main/java/de/bixilon/minosoft/game/datatypes/objectLoader/statistics/Statistic.java

@@ -35,11 +35,19 @@ public class Statistic {
         return String.format("%s:%s", getMod(), getIdentifier());
     }
 
+    @Override
+    public int hashCode() {
+        return mod.hashCode() * identifier.hashCode();
+    }
+
     @Override
     public boolean equals(Object obj) {
         if (super.equals(obj)) {
             return true;
         }
+        if (hashCode() != obj.hashCode()) {
+            return false;
+        }
         return toString().equals(obj.toString());
     }
 }