[LyX/2.2.x] Fix for previous commit: We come right back through here from exportBufferAs, so we need to make sure we haven't been given an export location.

[Richard Heck]

commit 180f1d54972ec60fc9d938472a257a0069ca89af
Author: Richard Heck <rgh...@lyx.org>
Date:   Sat Jun 25 00:41:23 2016 -0400

    Fix for previous commit: We come right back through here from
    exportBufferAs, so we need to make sure we haven't been given
    an export location.
---
 src/frontends/qt4/GuiView.cpp |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/src/frontends/qt4/GuiView.cpp b/src/frontends/qt4/GuiView.cpp
index 4fa0539..bb75daa 100644
--- a/src/frontends/qt4/GuiView.cpp
+++ b/src/frontends/qt4/GuiView.cpp
@@ -3530,7 +3530,8 @@ void GuiView::dispatch(FuncRequest const & cmd, 
DispatchResult & dr)
                                dispatch(FuncRequest(LFUN_DIALOG_SHOW, 
"sendto"), dr);
                                break;
                        }
-                       if (doc_buffer->isUnnamed() || 
!target_dir.isDirWritable()) {
+                       if ((dest.empty() && doc_buffer->isUnnamed())
+                           || !target_dir.isDirWritable()) {
                                exportBufferAs(*doc_buffer, cmd.argument());
                                break;
                        }