code style
diff --git a/Objects/abstract.c b/Objects/abstract.c
index d039a9c..2f887aa 100644
--- a/Objects/abstract.c
+++ b/Objects/abstract.c
@@ -2500,12 +2500,10 @@
         if (retval == 0) {
             PyObject *c = PyObject_GetAttr(inst, __class__);
             if (c == NULL) {
-                if (PyErr_ExceptionMatches(PyExc_AttributeError)) {
+                if (PyErr_ExceptionMatches(PyExc_AttributeError))
                     PyErr_Clear();
-                }
-                else {
+                else
                     retval = -1;
-                }
             }
             else {
                 if (c != (PyObject *)(inst->ob_type) &&
@@ -2523,12 +2521,10 @@
             return -1;
         icls = PyObject_GetAttr(inst, __class__);
         if (icls == NULL) {
-            if (PyErr_ExceptionMatches(PyExc_AttributeError)) {
+            if (PyErr_ExceptionMatches(PyExc_AttributeError))
                 PyErr_Clear();
-            }
-            else {
+            else
                 retval = -1;
-            }
         }
         else {
             retval = abstract_issubclass(icls, cls);