comment fix

git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@2661 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

src/chars.c

@@ -840,7 +840,7 @@ bool has_blank_mbchars(const char *s)
 #endif
 	return has_blank_chars(s);
 }
-#endif
+#endif /* ENABLE_NANORC */
 
 /* This function is equivalent to strchr() for multibyte strings. */
 char *mbstrchr(const char *s, char *c)