patch 8.2.1179: Test_termwinscroll() sometimes hangs in the GUI

Problem:    Test_termwinscroll() sometimes hangs in the GUI.
Solution:   Skip the test in the GUI.

src/testdir/test_terminal2.vim

@@ -184,6 +184,8 @@ endfunc
 
 func Test_termwinscroll()
   CheckUnix
+  " TODO: Somehow this test sometimes hangs in the GUI
+  CheckNotGui
 
   " Let the terminal output more than 'termwinscroll' lines, some at the start
   " will be dropped.

src/version.c

@@ -754,6 +754,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1179,
 /**/
     1178,
 /**/