patch 8.2.4502: in the GUI a modifier is not recognized after CTRL-X

Problem:    In the GUI a modifier is not recognized for the key typed after
            CTRL-X, which may result in a mapping to be used. (Daniel
            Steinberg)
Solution:   Recognize a modifier starting with CSI. (closes #9889)
diff --git a/src/version.c b/src/version.c
index 18a0442..51dc6de 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4502,
+/**/
     4501,
 /**/
     4500,