patch 7.4.1704
Problem:    Using freed memory with "wincmd p". (Dominique Pelle)
Solution:   Also clear "prevwin" in other tab pages.
diff --git a/src/version.c b/src/version.c
index ea6d1c3..58377a4 100644
--- a/src/version.c
+++ b/src/version.c
@@ -749,6 +749,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1704,
+/**/
     1703,
 /**/
     1702,