patch 8.2.0093: win_splitmove() can make Vim hang

Problem:    win_splitmove() can make Vim hang.
Solution:   Check windows exists in the current tab page. (closes #5444)
diff --git a/src/version.c b/src/version.c
index 28590ad..36dee83 100644
--- a/src/version.c
+++ b/src/version.c
@@ -743,6 +743,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    93,
+/**/
     92,
 /**/
     91,