is_null only if really needed

Author: realead

pandas/_libs/hashtable_func_helper.pxi.in

@@ -42,7 +42,6 @@ cdef value_count_{{dtype}}(const {{dtype}}_t[:] values, bint dropna):
 
         # Don't use Py_ssize_t, since table.n_buckets is unsigned
         khiter_t k
-        bint is_null
 
         {{c_type}} val
 
@@ -61,8 +60,7 @@ cdef value_count_{{dtype}}(const {{dtype}}_t[:] values, bint dropna):
 
     for i in range(n):
         val = values[i]
-        is_null = checknull(val)
-        if not is_null or not dropna:
+        if not dropna or not checknull(val):
             k = kh_get_{{ttype}}(table, <PyObject*>val)
             if k != table.n_buckets:
                 table.vals[k] += 1