typo in curs_util.3x

[Sven Joachim]

Hi,

when I started updating the Debian package, lintian noticed a spelling
error in curs_util.3x ("succesful"), coming from the 20150321
patchlevel.

--8<---------------cut here---------------start------------->8---
diff --git a/man/curs_util.3x b/man/curs_util.3x
index 70fbba2..6272504 100644
--- a/man/curs_util.3x
+++ b/man/curs_util.3x
@@ -307,7 +307,7 @@ A few applications may happen to write extra data in the 
file using
 these functions.
 Doing that can run into problems mixing block- and buffered-I/O.
 This implementation reduces the problem on writes by flushing the output.
-However, reading from a file written using mixed schemes may not be succesful.
+However, reading from a file written using mixed schemes may not be successful.
 .SS unctrl/wunctrl
 .PP
 The XSI Curses standard, Issue 4 describes these functions.
--8<---------------cut here---------------end--------------->8---

Cheers,
       Sven