gdiplus: Add parameter checks to GdipSetPropertyItem, print item contents in the trace.

[Dmitry Timoshkov]

---
 dlls/gdiplus/image.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/dlls/gdiplus/image.c b/dlls/gdiplus/image.c
index a4dade8..db79eca 100644
--- a/dlls/gdiplus/image.c
+++ b/dlls/gdiplus/image.c
@@ -3348,7 +3348,9 @@ GpStatus WINGDIPAPI GdipSetPropertyItem(GpImage *image, GDIPCONST PropertyItem*
 {
     static int calls;
 
-    TRACE("(%p,%p)\n", image, item);
+    if (!image || !item) return InvalidParameter;
+
+    TRACE("(%p,%p:%#x,%u,%u,%p)\n", image, item, item->id, item->type, item->length, item->value);
 
     if(!(calls++))
         FIXME("not implemented\n");
-- 
1.7.11.1