patch 7.4.1255

Problem:    Crash for channel "eval" command without third argument.
Solution:   Check for missing argument.

src/version.c

@@ -742,6 +742,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1255,
 /**/
     1254,
 /**/