Bit of cleanup

src/compiler/NubLang/Generation/QBE/QBEGenerator.cs

@@ -347,8 +347,10 @@ public partial class QBEGenerator
         var parameterStrings = parameters.Select(x => FuncQBETypeName(x.Type) + $" %{x.Name}");
 
         builder.Append($"({string.Join(", ", parameterStrings)})");
+        builder.AppendLine(" {");
+        builder.Append("@start");
 
-        _writer.StartFunction(builder.ToString());
+        _writer.WriteLine(builder.ToString());
 
         var scope = new Scope();
 
@@ -362,13 +364,10 @@ public partial class QBEGenerator
         // Implicit return for void functions if no explicit return has been set
         if (returnType is VoidTypeNode && body.Statements is [.., not ReturnNode])
         {
-            if (returnType is VoidTypeNode)
-            {
-                _writer.Indented("ret");
-            }
+            _writer.Indented("ret");
         }
 
-        _writer.EndFunction();
+        _writer.WriteLine("}");
     }
 
     private void EmitStructDefinition(StructNode structDef)

src/compiler/NubLang/Generation/QBE/QBEWriter.cs

@@ -6,18 +6,6 @@ internal class QBEWriter
 {
     private readonly StringBuilder _builder = new();
 
-    public void StartFunction(string signature)
-    {
-        _builder.Append(signature);
-        _builder.AppendLine(" {");
-        _builder.AppendLine("@start");
-    }
-
-    public void EndFunction()
-    {
-        _builder.AppendLine("}");
-    }
-
     public void Indented(string value)
     {
         _builder.Append('\t');