patch 8.0.1084: GTK build has compiler warnings

Problem:    GTK build has compiler warnings. (Christian Brabandt)
Solution:   Get screen size with a different function. (Ken Takata, Yasuhiro
            Matsumoto)
diff --git a/src/version.c b/src/version.c
index 8c610b7..acf6e29 100644
--- a/src/version.c
+++ b/src/version.c
@@ -770,6 +770,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1084,
+/**/
     1083,
 /**/
     1082,