patch 9.0.0881: cannot get the currently showing mouse shape

Problem:    Cannot get the currently showing mouse shape.
Solution:   Add getmouseshape().
diff --git a/src/version.c b/src/version.c
index f89595a..c5e7838 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    881,
+/**/
     880,
 /**/
     879,