[LyX/master] Simplify logic.

[Richard Heck]

commit 394fc5cf15372eee1dbb80828a86c7b97abadeac
Author: Richard Heck <rgh...@lyx.org>
Date:   Sun Nov 29 22:24:55 2015 -0500

    Simplify logic.

diff --git a/src/frontends/qt4/GuiView.cpp b/src/frontends/qt4/GuiView.cpp
index 7676356..977395d 100644
--- a/src/frontends/qt4/GuiView.cpp
+++ b/src/frontends/qt4/GuiView.cpp
@@ -2797,7 +2797,7 @@ bool GuiView::closeWorkAreaAll()
 
        // We have to call count() each time, because it can happen that
        // more than one splitter will disappear in one iteration (bug 5998).
-       for (; d.splitter_->count() > empty_twa; ) {
+       while (d.splitter_->count() > empty_twa) {
                TabWorkArea * twa = d.tabWorkArea(empty_twa);
 
                if (twa->count() == 0)