copy and paste error

Change-Id: Idfb9772912b52fa6cd33546953def4f65ac75e52
Reviewed-on: https://gerrit.libreoffice.org/61983
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

svx/source/svdraw/svdpdf.hxx

@@ -143,7 +143,7 @@ class ImpSdrPdfImport final
             if (top > bottom)
                 bottom = std::max(leftBottomY, rightBottomY);
             else
-                bottom = std::max(leftBottomY, rightBottomY);
+                bottom = std::min(leftBottomY, rightBottomY);
         }
 
         std::string toString() const