patch 9.0.0936: wrong type for "isunnamed" returned by getreginfo()

Problem:    Wrong type for "isunnamed" returned by getreginfo().
Solution:   Use VAR_BOOL instead of VAR_SPECIAL. (closes #11598)
diff --git a/src/version.c b/src/version.c
index 42a7e46..d7c6ef1 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    936,
+/**/
     935,
 /**/
     934,