Remove zero size special case for copy_to_stream

Author: nikic

main/streams/streams.c

@@ -1539,7 +1539,6 @@ PHPAPI int _php_stream_copy_to_stream_ex(php_stream *src, php_stream *dest, size
 	size_t haveread = 0;
 	size_t towrite;
 	size_t dummy;
-	php_stream_statbuf ssbuf;
 
 	if (!len) {
 		len = &dummy;
@@ -1554,17 +1553,6 @@ PHPAPI int _php_stream_copy_to_stream_ex(php_stream *src, php_stream *dest, size
 		maxlen = 0;
 	}
 
-	if (php_stream_stat(src, &ssbuf) == 0) {
-		if (ssbuf.sb.st_size == 0
-#ifdef S_ISREG
-			&& S_ISREG(ssbuf.sb.st_mode)
-#endif
-		) {
-			*len = 0;
-			return SUCCESS;
-		}
-	}
-
 	if (php_stream_mmap_possible(src)) {
 		char *p;