* load PNG direct over TLazIntfImage and TLazReaderPNG instead of TPortableNetworkGraphic

glBitmap.pas

@@ -5751,7 +5751,7 @@ const
   MAGIC_LEN = 8;
   PNG_MAGIC: String[MAGIC_LEN] = #$89#$50#$4E#$47#$0D#$0A#$1A#$0A;
 var
-  png: TPortableNetworkGraphic;
+  reader: TLazReaderPNG;
   intf: TLazIntfImage;
   StreamPos: Int64;
   magic: String[MAGIC_LEN];
@@ -5767,27 +5767,20 @@ begin
     exit;
   end;
 
-  png := TPortableNetworkGraphic.Create;
+  intf   := TLazIntfImage.Create(0, 0);
+  reader := TLazReaderPNG.Create;
   try try
-    png.LoadFromStream(aStream);
-    intf := png.CreateIntfImage;
-    try try
-      AssignFromLazIntfImage(intf);
-    except
-      result := false;
-      aStream.Position := StreamPos;
-      exit;
-    end;
-    finally
-      intf.Free;
-    end;
+    reader.UpdateDescription := true;
+    reader.ImageRead(aStream, intf);
+    AssignFromLazIntfImage(intf);
   except
     result := false;
     aStream.Position := StreamPos;
     exit;
   end;
   finally
-    png.Free;
+    reader.Free;
+    intf.Free;
   end;
 end;