patch 8.0.1193: crash when wiping out a buffer after using getbufinfo()

Problem:    Crash when wiping out a buffer after using getbufinfo().
            (Yegappan Lakshmanan)
Solution:   Remove b:changedtick from the buffer variables.
diff --git a/src/version.c b/src/version.c
index d16baeb..fa4d4e7 100644
--- a/src/version.c
+++ b/src/version.c
@@ -762,6 +762,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1193,
+/**/
     1192,
 /**/
     1191,