fixup! Implement Date#deconstruct_keys and DateTime#deconstruct_keys

Author: zverok

ext/date/date_core.c

@@ -7444,7 +7444,7 @@ deconstruct_keys(VALUE self, VALUE keys, int is_datetime) {
     get_d1(self);
 
     if (NIL_P(keys)) {
-        h = rb_hash_new_capa(5);
+        h = rb_hash_new();
 
         rb_hash_aset(h, sym_year, m_real_year(dat));
         rb_hash_aset(h, sym_month, INT2FIX(m_mon(dat)));
@@ -7468,7 +7468,7 @@ deconstruct_keys(VALUE self, VALUE keys, int is_datetime) {
 
     }
 
-    h = rb_hash_new_capa(RARRAY_LEN(keys));
+    h = rb_hash_new();
 
     for (i=0; i<RARRAY_LEN(keys); i++) {
         VALUE key = RARRAY_AREF(keys, i);