Remove a redundant empty write, because redundant code is annoying to read.
Remove a redundant empty write, because redundant code is annoying to read.

It sent me on a wild goose chase through the code to discover what it's for,
only to find in the end it's for nothing. The API we are providing does not
promise it, the called APIs do not require it nor guarantee to do anything
with it, and the 'svnadmin load' code does not need it. It originated as an
innocent-looking single line in r842201 and then grew to its current form in
r842708, all in the pre-1.0 era.

This code was only reached for a fulltext, never for a delta.
(svn_txdelta_parse_svndiff() treats a close after no data bytes were
received as an "early" close, and so would return an error on closing the
stream if we ever processed a zero-length delta block in this function.)

An API user would be able to see this change but should not be relying on it.

* subversion/libsvn_repos/load.c
  (parse_text_block): Remove an empty write to the stream in the case of an
    empty content block.

git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1575979 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion