Check for KEY_ENTER in getstring()

In some cases (e.g., TERM=pccon0) wgetch(3) can return KEY_ENTER instead
of '\n' when the return key is pressed, causing getstring() to fail.

Suggested-by: Mikolaj Kucharski <mikolaj@kucharski.name>
Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>

src/getstring.c

@@ -191,7 +191,8 @@ enum getstr getstring(WINDOW * win, char *str, int l, int x, int y)
 		getstr_print(win, x, y, &st);
 		wins_doupdate();
 
-		if ((ch = wgetch(win)) == '\n')
+		ch = wgetch(win);
+		if ((ch == '\n') || (ch == KEY_ENTER))
 			break;
 		switch (ch) {
 		case KEY_BACKSPACE:	/* delete one character */