updated for version 7.3.893

Problem:    Crash when using b:, w: or t: after closing the buffer, window or
            tabpage.
Solution:   Allocate the dictionary instead of having it part of the
            buffer/window/tabpage struct. (Yukihiro Nakadaira)

src/version.c

@@ -728,6 +728,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    893,
 /**/
     892,
 /**/