fix datatype mismatches

ext/standard/php_fopen_wrapper.c

@@ -82,7 +82,7 @@ static size_t php_stream_input_read(php_stream *stream, char *buf, size_t count)
 
 	if (!SG(post_read) && SG(read_post_bytes) < (int64_t)(input->position + count)) {
 		/* read requested data from SAPI */
-		int read_bytes = sapi_read_post_block(buf, count);
+		size_t read_bytes = sapi_read_post_block(buf, count);
 
 		if (read_bytes > 0) {
 			php_stream_seek(input->body, 0, SEEK_END);

main/SAPI.c

@@ -243,15 +243,15 @@ static void sapi_read_post_data(void)
 	}
 }
 
-SAPI_API int sapi_read_post_block(char *buffer, size_t buflen)
+SAPI_API size_t sapi_read_post_block(char *buffer, size_t buflen)
 {
-	int read_bytes;
+	size_t read_bytes;
 
 	if (!sapi_module.read_post) {
-		return -1;
+		return 0;
 	}
 
-	read_bytes = (int)sapi_module.read_post(buffer, buflen);
+	read_bytes = sapi_module.read_post(buffer, buflen);
 
 	if (read_bytes > 0) {
 		/* gogo */
@@ -277,7 +277,7 @@ SAPI_API SAPI_POST_READER_FUNC(sapi_read_standard_form_data)
 	SG(request_info).request_body = php_stream_temp_create_ex(TEMP_STREAM_DEFAULT, SAPI_POST_BLOCK_SIZE, PG(upload_tmp_dir));
 
 	if (sapi_module.read_post) {
-		int read_bytes;
+		size_t read_bytes;
 
 		for (;;) {
 			char buffer[SAPI_POST_BLOCK_SIZE];
@@ -509,7 +509,7 @@ SAPI_API void sapi_deactivate(void)
 		if (!SG(post_read)) {
 			/* make sure we've consumed all request input data */
 			char dummy[SAPI_POST_BLOCK_SIZE];
-			int read_bytes;
+			size_t read_bytes;
 
 			do {
 				read_bytes = sapi_read_post_block(dummy, SAPI_POST_BLOCK_SIZE);

main/SAPI.h

@@ -192,7 +192,7 @@ SAPI_API int sapi_add_header_ex(char *header_line, size_t header_line_len, zend_
 SAPI_API int sapi_send_headers(void);
 SAPI_API void sapi_free_header(sapi_header_struct *sapi_header);
 SAPI_API void sapi_handle_post(void *arg);
-SAPI_API int sapi_read_post_block(char *buffer, size_t buflen);
+SAPI_API size_t sapi_read_post_block(char *buffer, size_t buflen);
 SAPI_API int sapi_register_post_entries(sapi_post_entry *post_entry);
 SAPI_API int sapi_register_post_entry(sapi_post_entry *post_entry);
 SAPI_API void sapi_unregister_post_entry(sapi_post_entry *post_entry);