patch 7.4.2331

Problem:    Using CTRL-X CTRL-V to complete a command line from Insert mode
            does not work after entering an expression on the command line.
Solution:   Don't use "ccline" when not actually using a command line. (test
            by Hirohito Higashi)

src/version.c

@@ -763,6 +763,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2331,
 /**/
     2330,
 /**/