Fix null static_variable_ptr for uncalled fake closures

[iluuu1994]

Closes GH-8083

This is already fixed on master.

php-src/Zend/zend_closures.c

Lines 700 to 708 in 06de112

	} else if (func->op_array.static_variables) {
	HashTable *ht = ZEND_MAP_PTR_GET(func->op_array.static_variables_ptr);
	if (!ht) {
	ht = zend_array_dup(func->op_array.static_variables);
	ZEND_MAP_PTR_SET(func->op_array.static_variables_ptr, ht);
	}
	ZEND_MAP_PTR_INIT(closure->func.op_array.static_variables_ptr, ht);
	}

@dstogov I'm unsure if this fix is correct. Can you check? You made changes to map_ptr in the same commit (ddaf64b). I don't understand the details of how this works.

[dstogov]

This looks right.