patch 8.0.0710: a job that writes to a buffer clears completion

Problem:    A job that writes to a buffer clears command line completion.
            (Ramel Eshed)
Solution:   Do not redraw while showing the completion menu.

src/version.c

@@ -764,6 +764,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    710,
 /**/
     709,
 /**/