update dict instead of ignoring

src/PIL/JpegImagePlugin.py

@@ -101,11 +101,9 @@ def APP(self, marker):
         # markers appear in the correct sequence.
         self.icclist.append(s)
     elif marker == 0xFFED and s[:14] == b"Photoshop 3.0\x00":
-        # Process this marker only if previous were empty
-        if not self.info.get("photoshop"):
         # parse the image resource block
         offset = 14
-            photoshop = {}
+        photoshop = self.info.setdefault("photoshop", {})
         while s[offset : offset + 4] == b"8BIM":
             try:
                 offset += 4
@@ -133,7 +131,6 @@ def APP(self, marker):
                 offset += offset & 1  # align
             except struct.error:
                 break  # no sufficient data
-            self.info["photoshop"] = photoshop
 
     elif marker == 0xFFEE and s[:5] == b"Adobe":
         self.info["adobe"] = i16(s, 5)