You can use a pumpkin to spawn an iron golem

You can use an uncarved pumpkin to spawn an iron golem, in addition to the correct jack o'lantern/carved pumpkin.

Steps to reproduce:

1. Make a T shape out of iron blocks.
2. Place a regular pumpkin on the top middle iron block.

Expected results:
The pumpkin is placed on the iron block – a carved pumpkin or jack o'lantern should be required.

Actual results:
An iron golem is spawned.