patch 7.4.2255

Problem:    The script that checks translations can't handle plurals.
Solution:   Check for plural msgid and msgstr entries.  Leave the cursor on
            the first error.

src/version.c

@@ -763,6 +763,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2255,
 /**/
     2254,
 /**/