Fix background of 48px app icons (Bug #16873)

icons/48x48/org.xfce.panel.svg

@@ -15,7 +15,10 @@
    height="48"
    width="48"
    sodipodi:docname="org.xfce.panel.svg"
-   inkscape:version="0.92.4 (5da689c313, 2019-01-14)">
+   inkscape:version="0.92.4 (5da689c313, 2019-01-14)"
+   inkscape:export-filename="/home/ochosi/Nerdstuff/xfce/xfce4-panel/icons/48x48/org.xfce.panel.png"
+   inkscape:export-xdpi="96"
+   inkscape:export-ydpi="96">
   <sodipodi:namedview
      pagecolor="#ffffff"
      bordercolor="#666666"
@@ -23,15 +26,15 @@
      objecttolerance="10"
      gridtolerance="10"
      guidetolerance="10"
-     inkscape:pageopacity="1"
+     inkscape:pageopacity="0"
      inkscape:pageshadow="2"
-     inkscape:window-width="1920"
-     inkscape:window-height="1027"
+     inkscape:window-width="2560"
+     inkscape:window-height="1387"
      id="namedview35"
      showgrid="true"
      inkscape:zoom="22.627417"
-     inkscape:cx="20.083568"
-     inkscape:cy="29.347528"
+     inkscape:cx="11.775063"
+     inkscape:cy="28.817198"
      inkscape:window-x="0"
      inkscape:window-y="29"
      inkscape:window-maximized="1"