[Vk] Don't ask for VK_EXT_DEBUG_UTILS_EXTENSION_NAME if support was n…

…ot declared. Fixed validation error on Samsung A33.

RenderSystems/Vulkan/src/OgreVulkanRenderSystem.cpp

@@ -1294,7 +1294,8 @@ namespace Ogre
                 {
                     // Loader version < 1.1.114 is blacklisted as it will just crash.
                     // See https://github.com/KhronosGroup/Vulkan-ValidationLayers/issues/258
-                    bAllow_VK_EXT_debug_utils = true;
+                    bAllow_VK_EXT_debug_utils =
+                        VulkanDevice::hasInstanceExtension( VK_EXT_DEBUG_UTILS_EXTENSION_NAME );
                 }
             }
         }