Revert "manage: For isfloating/oldstate check/set, ensure trans client actually exists" a4771de5 
This reverts commit bece862a0fc4fc18ef9065b18cd28e2032d0d975.

It caused a regression, for example:
https://lists.suckless.org/hackers/2203/18220.html
Hiltjo Posthuma · 2022-04-26 10:30 1 file(s) · +1 −1
dwm.c +1 −1
1065 1065 
	XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
1066 1066 
	grabbuttons(c, 0);
1067 1067 
	if (!c->isfloating)
1068 - 
		c->isfloating = c->oldstate = t || c->isfixed;
1068 + 
		c->isfloating = c->oldstate = trans != None || c->isfixed;
1069 1069 
	if (c->isfloating)
1070 1070 
		XRaiseWindow(dpy, c->win);
1071 1071 
	attach(c);