fix: would crash if you didn't have any networked functions while still using the NetworkingLibUdonSharpBehaviour class

Author: DeltaNeverUsed

Packages/deltaneverused.udonsharpnetworkinglib/Editor/UdonSharpSyntaxRewriterInjector.cs

@@ -58,8 +58,9 @@ private static FieldDeclarationSyntax CreateByteArray(string varName, byte[] con
                     SyntaxFactory.Literal(b)));
                 initializerVars.Add(SyntaxFactory.Token(SyntaxKind.CommaToken));
             }
-
-            initializerVars.RemoveAt(initializerVars.Count - 1);
+            
+            if (initializerVars.Count > 1)
+                initializerVars.RemoveAt(initializerVars.Count - 1);
 
             var initializer = SyntaxFactory.EqualsValueClause(
                 SyntaxFactory.InitializerExpression(