Fixed issue with PLYReader:

Unsupported properties in ply-file will now be skipped instead of read as x-coordinates.

git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@157 fdac6126-5c0c-442c-9429-916003d36597

src/OpenMesh/Core/IO/reader/PLYReader.hh

@@ -143,7 +143,8 @@ private:
   enum VertexProperty {
     XCOORD,YCOORD,ZCOORD,
     TEXX,TEXY,
-    COLORRED,COLORGREEN,COLORBLUE,COLORALPHA
+    COLORRED,COLORGREEN,COLORBLUE,COLORALPHA,
+    UNSUPPORTED
   };