drawinglayer: fix bold dash dash dot overline in Impress.

Change-Id: Ie3fa48a6ff5cf602b1cd661e3e4053a001a4470f
Reviewed-on: https://gerrit.libreoffice.org/62083
Tested-by: Jenkins
Reviewed-by: Mark Hung <marklh9@gmail.com>

drawinglayer/source/primitive2d/textenumsprimitive2d.cxx

@@ -70,7 +70,7 @@ namespace drawinglayer
                 case TEXT_LINE_BOLDDASH:      return LINESTYLE_BOLDDASH;
                 case TEXT_LINE_BOLDLONGDASH:  return LINESTYLE_LONGDASH;
                 case TEXT_LINE_BOLDDASHDOT:   return LINESTYLE_BOLDDASHDOT;
-                case TEXT_LINE_BOLDDASHDOTDOT:return LINESTYLE_BOLDDASHDOT;
+                case TEXT_LINE_BOLDDASHDOTDOT:return LINESTYLE_BOLDDASHDOTDOT;
                 case TEXT_LINE_BOLDWAVE:      return LINESTYLE_BOLDWAVE;
             }
         }