patch 8.2.0457: Test_quotestar() often fails when run under valgrind

Problem:    Test_quotestar() often fails when run under valgrind.
Solution:   Wait longer for the GUI to start.

Author: brammool

src/testdir/test_quotestar.vim

@@ -107,7 +107,8 @@ func Do_test_quotestar_for_x11()
       call remote_send(name, ":gui -f\<CR>")
     endif
     " Wait for the server in the GUI to be up and answering requests.
-    call WaitForAssert({-> assert_match("1", remote_expr(name, "has('gui_running')", "", 1))})
+    " On some systems and with valgrind this can be very slow.
+    call WaitForAssert({-> assert_match("1", remote_expr(name, "has('gui_running')", "", 1))}, 10000)
 
     call remote_send(name, ":let @* = 'maybe'\<CR>")
     call WaitForAssert({-> assert_equal("maybe", remote_expr(name, "@*", "", 2))})

src/version.c

@@ -738,6 +738,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    457,
 /**/
     456,
 /**/