patch 9.1.0752: can set 'cedit' to an invalid value

Problem:  can set cedit to an invalid value
Solution: Check that the value is a valid key name
          (Milly)

closes: #15778

Signed-off-by: Milly <milly.ca@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index c6651c7..3743565 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    752,
+/**/
     751,
 /**/
     750,