gdiplus: Add traces for values of newly-created linecaps.

dlls/gdiplus/customlinecap.c

@@ -57,6 +57,8 @@ GpStatus WINGDIPAPI GdipCloneCustomLineCap(GpCustomLineCap* from,
            * sizeof(PointF));
     memcpy((*to)->pathdata.Types, from->pathdata.Types, from->pathdata.Count);
 
+    TRACE("<-- %p\n", *to);
+
     return Ok;
 }
 
@@ -105,6 +107,8 @@ GpStatus WINGDIPAPI GdipCreateCustomLineCap(GpPath* fillPath, GpPath* strokePath
     (*customCap)->join = LineJoinMiter;
     (*customCap)->scale = 1.0;
 
+    TRACE("<-- %p\n", *customCap);
+
     return Ok;
 }