startup: remove the now-unneeded workaround for a SIGWINCH during input

The previous commit makes that the terminal's state is only resaved
when standard input is actually reconnected to the terminal, and
leaves it unchanged otherwise.  Apparently this is enough to fix
https://savannah.gnu.org/bugs/?56394.

src/nano.c

@@ -60,11 +60,6 @@ static struct termios oldterm;
 # define tcgetattr(...)
 #endif
 
-#ifndef NANO_TINY
-bool size_changed = FALSE;
-		/* A secondary flag that is set to TRUE when a SIGWINCH occurs. */
-#endif
-
 static struct sigaction act;
 		/* Used to set up all our fun signal handlers. */
 
@@ -1086,13 +1081,9 @@ void reconnect_and_store_state(void)
 	dup2(thetty, 0);
 	close(thetty);
 
-	/* If there were no signals, store the current state of the terminal. */
-	if (!control_C_was_pressed) {
-#ifndef NANO_TINY
-		if (!size_changed)
-#endif
-			tcgetattr(0, &oldterm);
-	}
+	/* If input was not cut short, store the current state of the terminal. */
+	if (!control_C_was_pressed)
+		tcgetattr(0, &oldterm);
 }
 
 /* Read whatever comes from standard input into a new buffer. */
@@ -1290,8 +1281,6 @@ RETSIGTYPE handle_sigwinch(int signal)
 {
 	/* Let the input routine know that a SIGWINCH has occurred. */
 	the_window_resized = TRUE;
-	/* Set a second flag too, for when reading from standard input. */
-	size_changed = TRUE;
 }
 
 /* Reinitialize and redraw the screen completely. */