patch 8.1.0301: GTK: input method popup displayed on wrong screen.

Problem:    GTK: Input method popup displayed on wrong screen.
Solution:   Add the screen position offset. (Ken Takata, closes #3268)
diff --git a/src/version.c b/src/version.c
index e7ea55f..4cb2f34 100644
--- a/src/version.c
+++ b/src/version.c
@@ -795,6 +795,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    301,
+/**/
     300,
 /**/
     299,