fix #36869 (memory leak in output buffering when using chunked output)

Author: tony2001

NEWS

@@ -11,6 +11,8 @@ PHP                                                                        NEWS
 - Removed the E_STRICT deprecation notice from "var". (Ilia)
 - Fixed debug_zval_dump() to support private and protected members. (Dmitry)
 - Fixed SoapFault::getMessage(). (Dmitry)
+- Fixed bug #36869 (memory leak in output buffering when using chunked output).
+  (Tony)
 - Fixed bug #36859 (DOMElement crashes when calling __construct when 
   clone'ing). (Tony)
 - Fixed bug #36857 (Added support for partial content fetching to the HTTP

main/output.c

@@ -606,11 +606,7 @@ static inline void php_ob_append(const char *text, uint text_length TSRMLS_DC)
  	/* If implicit_flush is On or chunked buffering, send contents to next buffer and return. */
 	if (OG(active_ob_buffer).chunk_size
 		&& OG(active_ob_buffer).text_length >= OG(active_ob_buffer).chunk_size) {
-		zval *output_handler = OG(active_ob_buffer).output_handler;
 
-		if (output_handler) {
-			output_handler->refcount++;
-		}
 		php_end_ob_buffer(1, 1 TSRMLS_CC);
 		return;
 	}