make bad_mbchar a static const char* const in chars.c, as its value

doesn't change


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@3823 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

ChangeLog

@@ -49,6 +49,8 @@ CVS code -
 	  UTF-8 support.  Changes to main() and configure.ac. (DLR)
 	- Fix punctuation relating to "i.e." in various comments and
 	  documentation. (Benno Schulenberg and DLR)
+	- Make bad_mbchar a static const char* const in chars.c, as its
+	  value doesn't change. (DLR)
 - browser.c:
   do_browser()
 	- Refactor the mouse support, modeling it after do_mouse() for

src/chars.c

@@ -41,7 +41,7 @@ static const wchar_t bad_wchar = 0xFFFD;
 	 * Unicode FFFD (Replacement Character), unless we're
 	 * determining if it's a control character or searching for a
 	 * match to it. */
-static const char *bad_mbchar = "\xEF\xBF\xBD";
+static const char *const bad_mbchar = "\xEF\xBF\xBD";
 static const int bad_mbchar_len = 3;
 
 /* Enable UTF-8 support. */