DX11: Fixed device creation flags.

src/renderer_d3d11.cpp

@@ -666,7 +666,7 @@ RENDERDOC_IMPORT
 			};
 
 			uint32_t flags = D3D11_CREATE_DEVICE_SINGLETHREADED
-				| BX_ENABLED(BGFX_CONFIG_DEBUG) ? D3D11_CREATE_DEVICE_DEBUG : 0
+				| (BX_ENABLED(BGFX_CONFIG_DEBUG) ? D3D11_CREATE_DEVICE_DEBUG : 0)
 				;
 
 			D3D_FEATURE_LEVEL featureLevel;