cl_khr_command_buffer_mutable_dispatch: fix incorrect logic in Skip check

the test checks 'cl_khr_extended_versioning' then immediately calls:
get_extension_version(device, "cl_khr_command_buffer_mutable_dispatch");
.. however, get_extension_version throws an exception when called
with unsupported extension.

Author: franz

test_conformance/extensions/cl_khr_command_buffer/cl_khr_command_buffer_mutable_dispatch/mutable_command_info.cpp

@@ -120,6 +120,8 @@ struct PropertiesArray : public InfoMutableCommandBufferTest
     virtual bool Skip() override
     {
         Version device_version = get_device_cl_version(device);
+        if (InfoMutableCommandBufferTest::Skip())
+            return true;
         if ((device_version >= Version(3, 0))
             || is_extension_available(device, "cl_khr_extended_versioning"))
         {
@@ -132,7 +134,7 @@ struct PropertiesArray : public InfoMutableCommandBufferTest
                 return true;
             }
         }
-        return InfoMutableCommandBufferTest::Skip();
+        return false;
     }
 
     cl_int Run() override