[LyX/master] Fix embarrassing thinko (fixup 1a969fa4a61)

[Jean-Marc Lasgouttes]

commit d789a3c94136a3a70a30e2d2ed42a95451b9736e
Author: Jean-Marc Lasgouttes <lasgout...@lyx.org>
Date:   Fri Jan 26 10:06:28 2018 +0100

    Fix embarrassing thinko (fixup 1a969fa4a61)
    
    Now people know for sure that I sometimes forget to test that code
    actually works before committing. It was so straightforward, what
    could possibly go wrong?
---
 src/BufferView.cpp |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/BufferView.cpp b/src/BufferView.cpp
index 18f9725..b64f36d 100644
--- a/src/BufferView.cpp
+++ b/src/BufferView.cpp
@@ -394,10 +394,10 @@ int BufferView::zoomedPixels(int pix) const
        // Zoom factor specified by user in percent
        double const zoom = lyxrc.currentZoom / 100.0; // [percent]
 
-       // DPI setting for monitor: pixels/inch
-       double const dpi = lyxrc.dpi; // screen resolution [pixels/inch]
+       // DPI setting for monitor relative to 100dpi
+       double const dpizoom = lyxrc.dpi / 100.0; // [per 100dpi]
 
-       return support::iround(pix * zoom * dpi);
+       return support::iround(pix * zoom * dpizoom);
 }