[LLDB] Fix condition in test

Author: adrian-prantl

lldb/test/API/macosx/posix_spawn/TestLaunchProcessPosixSpawn.py

@@ -21,7 +21,7 @@ def rosetta_debugserver_installed():
     import platform
     version = platform.mac_ver()
     # Workaround for an undiagnosed problem on green dragon.
-    if version[0] and version[0][0] == '15' and version[0][1] == '5':
+    if version[0] == '15.5':
         return False
     return exists("/Library/Apple/usr/libexec/oah/debugserver")