patch 8.1.1494: build failure

Problem:    Build failure.
Solution:   Add missing changes.
diff --git a/src/structs.h b/src/structs.h
index c68989a..5f27d42 100644
--- a/src/structs.h
+++ b/src/structs.h
@@ -1991,6 +1991,9 @@
     POPPOS_TOPRIGHT,
     POPPOS_CENTER
 } poppos_T;
+
+# define POPUPWIN_DEFAULT_ZINDEX    50
+# define POPUPMENU_ZINDEX	    100
 #endif
 
 /*
diff --git a/src/version.c b/src/version.c
index fb159d9..ed8fba0 100644
--- a/src/version.c
+++ b/src/version.c
@@ -768,6 +768,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1494,
+/**/
     1493,
 /**/
     1492,