MINOR: htx: make htx_add_data() return the transmitted byte count
In order to later allow htx_add_data() to transmit partial blocks and
avoid defragmenting the buffer, we'll need to return the number of bytes
consumed. This first modification makes the function do this and its
callers take this into account. At the moment the function still works
atomically so it returns either the block size or zero. However all
call places have been adapted to consider any value between zero and
the block size.
diff --git a/include/common/htx.h b/include/common/htx.h
index 463f729..fd0871c 100644
--- a/include/common/htx.h
+++ b/include/common/htx.h
@@ -186,7 +186,7 @@
struct htx_blk *htx_add_all_headers(struct htx *htx, const struct http_hdr *hdrs);
struct htx_blk *htx_add_endof(struct htx *htx, enum htx_blk_type type);
struct htx_blk *htx_add_data_atonce(struct htx *htx, const struct ist data);
-struct htx_blk *htx_add_data(struct htx *htx, const struct ist data);
+size_t htx_add_data(struct htx *htx, const struct ist data);
struct htx_blk *htx_add_trailer(struct htx *htx, const struct ist tlr);
struct htx_blk *htx_add_data_before(struct htx *htx, const struct htx_blk *ref, const struct ist data);