fix: Decompilation artifact repairs for Java 11 compilation

- Duplicate variable declarations in switch-case branches (AvMenu, ServerInputStream, netData, AnimatedAction)
- Ambiguous null constructor calls requiring explicit casts (ExpireDialog, PosableShape)
- Deprecated getPeer() replaced with isDisplayable() (PolledDialog)
- Decompiler $assertionsDisabled artifact removed (BackgroundLoader)
- Missing null-safety on unboxing (BooleanFieldEditorDialog)
- Raw generic types parameterized (ShallowEnumeration)
- Raw Enumeration cast added (Shape)

2 files changed, 2 insertions, 2 deletions

diff --git a/NET/worlds/network/ServerInputStream.java b/NET/worlds/network/ServerInputStream.java
index bfca04e..74ba8bc 100644
--- a/NET/worlds/network/ServerInputStream.java
+++ b/NET/worlds/network/ServerInputStream.java
@@ -231,7 +231,7 @@ public class ServerInputStream extends FilterInputStream {
                         throw new UTFDataFormatException();
                      }
 
-                     int char2 = this.readUnsignedByte();
+                     char2 = this.readUnsignedByte();
                      int char3 = this.readUnsignedByte();
                      if ((char2 & 192) != 128 || (char3 & 192) != 128) {
                         throw new UTFDataFormatException();
diff --git a/NET/worlds/network/netData.java b/NET/worlds/network/netData.java
index c3375a3..79e8e7b 100644
--- a/NET/worlds/network/netData.java
+++ b/NET/worlds/network/netData.java
@@ -87,7 +87,7 @@ class netData {
                      throw new UTFDataFormatException();
                   }
 
-                  int char2 = this.getByte() & 255;
+                  char2 = this.getByte() & 255;
                   int char3 = this.getByte() & 255;
                   if ((char2 & 192) != 128 || (char3 & 192) != 128) {
                      throw new UTFDataFormatException();