patch 8.1.1752: resizing hashtable is inefficient

Problem:    Resizing hashtable is inefficient.
Solution:   Avoid resizing when the final size is predictable.

src/version.c

@@ -777,6 +777,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1752,
 /**/
     1751,
 /**/