Fix spl_directory cast_object, reenable error

Author: nikic

Zend/zend_execute.h

@@ -115,8 +115,7 @@ static zend_always_inline int i_zend_is_true(zval *op TSRMLS_DC)
 						break;
 					}
 
-					// TODO: The following line breakes phar ???
-					// zend_error(E_RECOVERABLE_ERROR, "Object of class %s could not be converted to boolean", Z_OBJ_P(op)->ce->name->val);
+					zend_error(E_RECOVERABLE_ERROR, "Object of class %s could not be converted to boolean", Z_OBJ_P(op)->ce->name->val);
 				} else if (Z_OBJ_HT_P(op)->get) {
 					zval rv;
 					zval *tmp = Z_OBJ_HT_P(op)->get(op, &rv TSRMLS_CC);

ext/spl/spl_directory.c

@@ -1881,6 +1881,9 @@ static int spl_filesystem_object_cast(zval *readobj, zval *writeobj, int type TS
 			}
 			return SUCCESS;
 		}
+	} else if (type == _IS_BOOL) {
+		ZVAL_TRUE(writeobj);
+		return SUCCESS;
 	}
 	if (readobj == writeobj) {
 		zval_dtor(readobj);