Disable unicode-later-combining.test for tmux 2.4.

src/tests/e2e-test-subrs

@@ -10,6 +10,12 @@ fail()
     exit 99
 }
 
+skip()
+{
+    printf "$@" 2>&1
+    exit 77
+}
+
 sleepf()
 {
     (sleep .1 || sleep 1) > /dev/null 2>&1

src/tests/unicode-later-combining.test

@@ -37,6 +37,9 @@ variant()
 post()
 {
     export LANG=C
+    if [ "$(tmux -V)" = "tmux 2.4" ]; then
+	skip "tmux 2.4 unicode combining bug breaks this test\n"
+    fi
     if grep -q "$(printf '^\302\240\314\202$')" "$(basename "$0").d/baseline.capture"; then
 	exit 0
     fi