Remove dead code

As pointed out by Girgias, index is always non-NULL here.

Author: nikic

ext/standard/array.c

@@ -4199,50 +4199,46 @@ PHP_FUNCTION(array_column)
 			/* Failure will leave keyval alone which will land us on the final else block below
 			 * which is to append the value as next_index
 			 */
-			if (index) {
-				zval rv;
-				zval *keyval = array_column_fetch_prop(data, index, &rv);
-
-				if (keyval) {
-					switch (Z_TYPE_P(keyval)) {
-						case IS_STRING:
-							zend_symtable_update(Z_ARRVAL_P(return_value), Z_STR_P(keyval), colval);
-							break;
-						case IS_LONG:
-							zend_hash_index_update(Z_ARRVAL_P(return_value), Z_LVAL_P(keyval), colval);
-							break;
-						case IS_OBJECT:
-							{
-								zend_string *tmp_key;
-								zend_string *key = zval_get_tmp_string(keyval, &tmp_key);
-								zend_symtable_update(Z_ARRVAL_P(return_value), key, colval);
-								zend_tmp_string_release(tmp_key);
-								break;
-							}
-						case IS_NULL:
-							zend_hash_update(Z_ARRVAL_P(return_value), ZSTR_EMPTY_ALLOC(), colval);
-							break;
-						case IS_DOUBLE:
-							zend_hash_index_update(Z_ARRVAL_P(return_value),
-									zend_dval_to_lval(Z_DVAL_P(keyval)), colval);
-							break;
-						case IS_TRUE:
-							zend_hash_index_update(Z_ARRVAL_P(return_value), 1, colval);
-							break;
-						case IS_FALSE:
-							zend_hash_index_update(Z_ARRVAL_P(return_value), 0, colval);
-							break;
-						case IS_RESOURCE:
-							zend_hash_index_update(Z_ARRVAL_P(return_value), Z_RES_HANDLE_P(keyval), colval);
-							break;
-						default:
-							zend_hash_next_index_insert(Z_ARRVAL_P(return_value), colval);
+			zval rv;
+			zval *keyval = array_column_fetch_prop(data, index, &rv);
+
+			if (keyval) {
+				switch (Z_TYPE_P(keyval)) {
+					case IS_STRING:
+						zend_symtable_update(Z_ARRVAL_P(return_value), Z_STR_P(keyval), colval);
+						break;
+					case IS_LONG:
+						zend_hash_index_update(Z_ARRVAL_P(return_value), Z_LVAL_P(keyval), colval);
+						break;
+					case IS_OBJECT:
+						{
+							zend_string *tmp_key;
+							zend_string *key = zval_get_tmp_string(keyval, &tmp_key);
+							zend_symtable_update(Z_ARRVAL_P(return_value), key, colval);
+							zend_tmp_string_release(tmp_key);
 							break;
-					}
-					zval_ptr_dtor(keyval);
-				} else {
-					zend_hash_next_index_insert(Z_ARRVAL_P(return_value), colval);
+						}
+					case IS_NULL:
+						zend_hash_update(Z_ARRVAL_P(return_value), ZSTR_EMPTY_ALLOC(), colval);
+						break;
+					case IS_DOUBLE:
+						zend_hash_index_update(Z_ARRVAL_P(return_value),
+								zend_dval_to_lval(Z_DVAL_P(keyval)), colval);
+						break;
+					case IS_TRUE:
+						zend_hash_index_update(Z_ARRVAL_P(return_value), 1, colval);
+						break;
+					case IS_FALSE:
+						zend_hash_index_update(Z_ARRVAL_P(return_value), 0, colval);
+						break;
+					case IS_RESOURCE:
+						zend_hash_index_update(Z_ARRVAL_P(return_value), Z_RES_HANDLE_P(keyval), colval);
+						break;
+					default:
+						zend_hash_next_index_insert(Z_ARRVAL_P(return_value), colval);
+						break;
 				}
+				zval_ptr_dtor(keyval);
 			} else {
 				zend_hash_next_index_insert(Z_ARRVAL_P(return_value), colval);
 			}