Apply suggestions from code review

Co-authored-by: mpage <mpage@cs.stanford.edu>

Author: kumaraditya303

Objects/genobject.c

@@ -2039,7 +2039,7 @@ async_gen_asend_send(PyObject *self, PyObject *arg)
         arg = o->ags_sendval;
     }
 
-do_send:;
+do_send:
     PyObject *result = gen_send((PyObject*)o->ags_gen, arg);
     result = async_gen_unwrap_value(o->ags_gen, result);
 
@@ -2100,7 +2100,7 @@ async_gen_asend_throw(PyObject *self, PyObject *const *args, Py_ssize_t nargs)
         return NULL;
     }
 
-do_throw:;
+do_throw:
     PyObject *result = gen_throw((PyObject*)o->ags_gen, args, nargs);
     result = async_gen_unwrap_value(o->ags_gen, result);
 
@@ -2521,7 +2521,7 @@ async_gen_athrow_throw(PyObject *self, PyObject *const *args, Py_ssize_t nargs)
         return NULL;
     }
 
-do_throw:;
+do_throw:
     PyObject *retval = gen_throw((PyObject*)o->agt_gen, args, nargs);
     if (o->agt_typ) {
         retval = async_gen_unwrap_value(o->agt_gen, retval);