use buffered writing for InRelease splitting

Hardly noticeable, but given that we have the option to easily enable
it, lets enable it as every newline in the message is written
individually by the code.

diff --git a/apt-pkg/contrib/gpgv.cc b/apt-pkg/contrib/gpgv.cc
index ef84da0d82936b938a1d6bf35ec21c10bae45302..0929ae0e2c06c40922548c5ae6a27e2e2dbc3f2c 100644 (file)
--- a/apt-pkg/contrib/gpgv.cc
+++ b/apt-pkg/contrib/gpgv.cc
@@ -341,7 +341,7 @@ bool OpenMaybeClearSignedFile(std::string const &ClearSignedFileName, FileFd &Me
    unlink(message);
    free(message);
 
-   MessageFile.OpenDescriptor(messageFd, FileFd::ReadWrite, true);
+   MessageFile.OpenDescriptor(messageFd, FileFd::ReadWrite | FileFd::BufferedWrite, true);
    if (MessageFile.Failed() == true)
       return _error->Error("Couldn't open temporary file to work with %s", ClearSignedFileName.c_str());