tests: Disable test-menubar.lua where needed

This test runs into an lgi bug that causes awesome to segfault. Work
around this by just disabling the test where needed.

Signed-off-by: Uli Schlachter <psychon@znc.in>

tests/test-menubar.lua

@@ -3,6 +3,17 @@
 local runner = require("_runner")
 local menubar = require("menubar")
 
+-- XXX We are building Lua 5.3 with -DLUA_USE_APICHECK=1 and this catches some
+-- bugs in lgi. Thus, do not run this test with Lua 5.3 until lgi is fixed.
+-- We run into the same bug when doing code-coverage analysis, supposedly
+-- because the additional GC activity means that something which is GC-able when
+-- it should not gets collected too early
+if _VERSION == "Lua 5.3" or debug.gethook() then
+    print("Skipping this test since it would just fail.")
+    runner.run_steps { function() return true end }
+    return
+end
+
 runner.run_steps {
     function(count)
         -- Just show the menubar and hide it.