Fix clang-format styling on switch labels

Author: rodrigobnogueira

multidict/_multilib/hashtable.h

@@ -1434,35 +1434,38 @@ md_update_from_dict(MultiDictObject* md, PyObject* kwds, UpdateOp op)
             goto fail;
         }
         switch (op) {
-            case Update:; {
-                if (_md_update(md, hash, identity, key, value) < 0) {
-                    goto fail;
-                }
-                Py_CLEAR(identity);
-                Py_CLEAR(key);
-                break;
-            }
-            case Extend:; {
-                int tmp = _md_add_with_hash_steal_refs(
-                    md, hash, identity, key, Py_NewRef(value));
-                if (tmp < 0) {
-                    Py_DECREF(value);
-                    goto fail;
+            case Update:;
+                {
+                    if (_md_update(md, hash, identity, key, value) < 0) {
+                        goto fail;
+                    }
+                    Py_CLEAR(identity);
+                    Py_CLEAR(key);
+                    break;
                 }
+            case Extend:;
+                {
+                    int tmp = _md_add_with_hash_steal_refs(
+                        md, hash, identity, key, Py_NewRef(value));
+                    if (tmp < 0) {
+                        Py_DECREF(value);
+                        goto fail;
+                    }
 
-                identity = NULL;
-                key = NULL;
-                value = NULL;
-                break;
-            }
-            case Merge:; {
-                if (_md_merge(md, hash, identity, key, value) < 0) {
-                    goto fail;
+                    identity = NULL;
+                    key = NULL;
+                    value = NULL;
+                    break;
+                }
+            case Merge:;
+                {
+                    if (_md_merge(md, hash, identity, key, value) < 0) {
+                        goto fail;
+                    }
+                    Py_CLEAR(identity);
+                    Py_CLEAR(key);
+                    break;
                 }
-                Py_CLEAR(identity);
-                Py_CLEAR(key);
-                break;
-            }
         }
     }
     return 0;