Fix constructor and non allman

crates/codegen/src/fmt/mod.rs

@@ -62,7 +62,7 @@ impl MistCodegen {
             self.addln("");
             self.add_indentedln("{");
         } else {
-            self.add(" {");
+            self.addln(" {");
         }
 
         self.indent += 1;

crates/codegen/src/fmt/top_level.rs

@@ -307,8 +307,8 @@ impl GenMist for TopLevelKind {
                         }
                         param.gen_mist(ctx, cg);
                     }
-                    cg.addln(") ");
+                    cg.add(") ");
-                    cg.add_indented("");
+                    cg.start_indent();
                     constructor.item.body.gen_mist(ctx, cg);
                     cg.addln("");