Properly skip ignored value

Change-Id: I1ac75cde58a52f87ef6825baa2e689dbc449c8f0
Reviewed-on: https://gerrit.libreoffice.org/46547Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>

canvas/source/cairo/cairo_canvashelper.cxx

@@ -2097,7 +2097,7 @@ namespace cairocanvas
                         *pOut++ = vcl::unotools::toDoubleColor(*pIn++);
                         *pOut++ = vcl::unotools::toDoubleColor(*pIn++);
                         *pOut++ = vcl::unotools::toDoubleColor(*pIn++);
-                        *pOut++ = 1.0; // the value does not matter
+                        *pOut++ = 1.0; pIn++; // the value does not matter
                     }
                     return aRes;
                 }

canvas/source/tools/canvastools.cxx

@@ -678,7 +678,7 @@ namespace canvas
                             *pOut++ = vcl::unotools::toDoubleColor(*pIn++);
                             *pOut++ = vcl::unotools::toDoubleColor(*pIn++);
                             *pOut++ = vcl::unotools::toDoubleColor(*pIn++);
-                            *pOut++ = 1.0;
+                            *pOut++ = 1.0; pIn++;
                         }
                         return aRes;
                     }