clang-analyzer-deadcode.DeadStores

The code had been like this ever since 16cba772
"#112673# initial checkin of HWP filter."  Assuming that the second line should
rather read

  angle = 1800 - angle * 10;

instead of

  angle = 1800 - prop->angle * 10;

does not look too plausible:  It would keep mapping

   -1  ->  181
    0  ->  180
    1  ->  179
       :
  179  ->    1

but then would discontinuously map

  180  ->  180
  181  ->  179
       :

instead of continuously mapping

  180  ->    0
  181  ->   -1
       :

Change-Id: I8cf97eeb53409b18bda6777b09a20331f3c8132a

hwpfilter/source/hwpreader.cxx

@@ -648,8 +648,7 @@ void HwpReader::makeDrawMiscStyle( HWPDrawingObject *hdo )
                 }
                 if( prop->angle > 0 && ( prop->gstyle == 1 || prop->gstyle == 4))
                 {
-                    int angle = prop->angle >= 180 ? prop->angle - 180 : prop->angle;
-                    angle = 1800 - prop->angle * 10;
+                    int angle = 1800 - prop->angle * 10;
                     padd( "draw:angle", sXML_CDATA,
                         ascii(Int2Str( angle, "%d", buf)));
                 }