Reset adjust mode when hiding inputbar

[9ary]

Zathura sets a special adjust mode before showing the inputbar. Remaining in that mode after it has been hidden breaks things like rotation, so reset to none.

[jdujava]

Woudn't it be nice to restore the adjust mode to the value before entering the inputbar?
As of now, the original adjust mode is lost on every search or inputbar action.

[9ary]

Yeah, I've thought of this too. This technically isn't a regression since the inputbar was leaving the adjust mode in a broken state before.

I was under the impression that hiding the index did the same thing, but it actually only does it when the adjust mode was inputbar:

zathura/zathura/shortcuts.c

Lines 1245 to 1248 in b794eb2

	/* zathura goes to the first page when toggling index mode if this isn't done */
	if (adjust_mode == ZATHURA_ADJUST_INPUTBAR) {
	zathura_document_set_adjust_mode(zathura->document, ZATHURA_ADJUST_NONE);
	}

I guess this could be cleaned up, and the adjust mode can be restored.

[jdujava]

Yeah, I've thought of this too. This technically isn't a regression since the inputbar was leaving the adjust mode in a broken state before.

Exactly, this PR seemed to go in the direction of improving this behavior, hence my suggestion.

[sebastinas]

Please implement the changes mentioned by @jdujava.

[9ary]

Sorry, I stopped using Zathura due to growing frustration with some less trivial bugs. I think it'd be best if someone else picked up this patch.