[LyX/master] GuiCitation: don't reset filter on show

[Juergen Spitzmueller]

commit 33d6499bbc98fe0efd8e271049cb22944ffbf71c
Author: Juergen Spitzmueller <sp...@lyx.org>
Date:   Sat Sep 22 10:37:22 2018 +0200

    GuiCitation: don't reset filter on show
    
    Addresses #11291
---
 src/frontends/qt4/GuiCitation.cpp |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/src/frontends/qt4/GuiCitation.cpp 
b/src/frontends/qt4/GuiCitation.cpp
index 19028be..41de1e5 100644
--- a/src/frontends/qt4/GuiCitation.cpp
+++ b/src/frontends/qt4/GuiCitation.cpp
@@ -202,7 +202,8 @@ void GuiCitation::applyView()
 
 void GuiCitation::showEvent(QShowEvent * e)
 {
-       filter_->clear();
+       if (!filter_->text().isEmpty())
+               filterPressed();
        availableLV->setFocus();
        DialogView::showEvent(e);
 }