Rely on ttyresize to set tty size

This removes ttynew's dependency on cresize being called first, and then
allows us to absorb the ttyresize call into cresize (which always
precedes it).

Signed-off-by: Devin J. Pohly <djpohly@gmail.com>

st.c

@@ -670,7 +670,6 @@ void
 ttynew(char *line, char *out, char **args)
 {
 	int m, s;
-	struct winsize w = {term.row, term.col, 0, 0};
 
 	if (out) {
 		term.mode |= MODE_PRINT;
@@ -691,7 +690,7 @@ ttynew(char *line, char *out, char **args)
 	}
 
 	/* seems to work fine on linux, openbsd and freebsd */
-	if (openpty(&m, &s, NULL, NULL, &w) < 0)
+	if (openpty(&m, &s, NULL, NULL, NULL) < 0)
 		die("openpty failed: %s\n", strerror(errno));
 
 	switch (pid = fork()) {

x.c

@@ -276,7 +276,6 @@ zoomabs(const Arg *arg)
 	xunloadfonts();
 	xloadfonts(usedfont, arg->f);
 	cresize(0, 0);
-	ttyresize(win.tw, win.th);
 	redraw();
 	xhints();
 }
@@ -695,6 +694,7 @@ cresize(int width, int height)
 
 	tresize(col, row);
 	xresize(col, row);
+	ttyresize(win.tw, win.th);
 }
 
 void
@@ -1794,7 +1794,6 @@ resize(XEvent *e)
 		return;
 
 	cresize(e->xconfigure.width, e->xconfigure.height);
-	ttyresize(win.tw, win.th);
 }
 
 void
@@ -1823,9 +1822,8 @@ run(void)
 		}
 	} while (ev.type != MapNotify);
 
-	cresize(w, h);
 	ttynew(opt_line, opt_io, opt_cmd);
-	ttyresize(win.tw, win.th);
+	cresize(w, h);
 
 	clock_gettime(CLOCK_MONOTONIC, &last);
 	lastblink = last;