Trim whitespace from end when parsing XMP data

Author: radarhere

Tests/test_image.py

@@ -989,7 +989,7 @@ def test_getxmp_padded(self) -> None:
         im = Image.new("RGB", (1, 1))
         im.info["xmp"] = (
             b'<?xpacket begin="\xef\xbb\xbf" id="W5M0MpCehiHzreSzNTczkc9d"?>\n'
-            b'<x:xmpmeta xmlns:x="adobe:ns:meta/" />\n<?xpacket end="w"?>\x00\x00'
+            b'<x:xmpmeta xmlns:x="adobe:ns:meta/" />\n<?xpacket end="w"?>\x00\x00 '
         )
         if ElementTree is None:
             with pytest.warns(

src/PIL/Image.py

@@ -1511,7 +1511,7 @@ def get_value(element: Element) -> str | dict[str, Any] | None:
             return {}
         if "xmp" not in self.info:
             return {}
-        root = ElementTree.fromstring(self.info["xmp"].rstrip(b"\x00"))
+        root = ElementTree.fromstring(self.info["xmp"].rstrip(b"\x00 "))
         return {get_name(root.tag): get_value(root)}
 
     def getexif(self) -> Exif: