Diamond Pipes only drop item in first filter slot when broken

[Kneelawk]

While messing around with SimplePipes in a test world, I noticed that a diamond pipe, when broken, either in creative or survival, did not drop the items I had put into its filter inventory. I looked through the source a little to find what could be causing this and I noticed in TilePipeItemDiamond.removeItemsForDrop() only removed/returned the item in the pipe's first inventory slot. I tested this in a world and found that the pipe indeed did drop any item placed in the first inventory slot but not in any other slots.

This is likely a simple fix. I can probably create a pull-request fixing this if necessary.

[AlexIIL]

(I'll close this when I've actually tested and released the fix).

[Kneelawk]

I just tested the fix. Diamond pipes seem to drop all the items in their filters now.