adjacent pit movement isn't a fall

H7074 1311

> When moving from a pit into an adjacent pit, you "fall into" the pit and take
> damage. This happens even when you are walking back and forth between two pits,
> repeatedly, where you should have no way to fall.
>
> The intent seems to be that you can move into the adjacent pit without having
> to climb out of the first one, and this works properly - the only problem is
> that the pit gets triggered when you ought to have no distance to fall.

This is really just stumbling over uncleared clutter, not a pit fall.
There was already a way to clear the clutter between adjacent pits.

doc/fixes36.1

@@ -540,6 +540,7 @@ wizard mode 'sanity_check' gave spurious "mon not on map" warnings when mounted
 at the prompt for entering a level annotation, responding with <return>
 	erroneously removed old annotation; use <space><return> to do that
 reorder the #droptype menu and add some separator lines
+moving from a pit to an adjacent pit with uncleared debris shouldn't be a fall
 
 
 Fixes to Post-3.6.0 Problems that Were Exposed Via git Repository