imgui_impl_dx11: Using ID3D11Factory instead of ID3D11Factory1 (#1989)

diff --git a/examples/imgui_impl_dx11.cpp b/examples/imgui_impl_dx11.cpp
index aa747aa..fec2d00 100644
--- a/examples/imgui_impl_dx11.cpp
+++ b/examples/imgui_impl_dx11.cpp
@@ -28,14 +28,14 @@
 // DirectX data
 static ID3D11Device*            g_pd3dDevice = NULL;
 static ID3D11DeviceContext*     g_pd3dDeviceContext = NULL;
-static IDXGIFactory1*           g_pFactory = NULL;
+static IDXGIFactory*            g_pFactory = NULL;
 static ID3D11Buffer*            g_pVB = NULL;
 static ID3D11Buffer*            g_pIB = NULL;
-static ID3D10Blob *             g_pVertexShaderBlob = NULL;
+static ID3D10Blob*              g_pVertexShaderBlob = NULL;
 static ID3D11VertexShader*      g_pVertexShader = NULL;
 static ID3D11InputLayout*       g_pInputLayout = NULL;
 static ID3D11Buffer*            g_pVertexConstantBuffer = NULL;
-static ID3D10Blob *             g_pPixelShaderBlob = NULL;
+static ID3D10Blob*              g_pPixelShaderBlob = NULL;
 static ID3D11PixelShader*       g_pPixelShader = NULL;
 static ID3D11SamplerState*      g_pFontSampler = NULL;
 static ID3D11ShaderResourceView*g_pFontTextureView = NULL;
@@ -471,7 +471,7 @@
     // Get factory from device
     IDXGIDevice* pDXGIDevice = NULL;
     IDXGIAdapter* pDXGIAdapter = NULL;
-    IDXGIFactory1* pFactory = NULL;
+    IDXGIFactory* pFactory = NULL;
 
     if (device->QueryInterface(IID_PPV_ARGS(&pDXGIDevice)) == S_OK)
         if (pDXGIDevice->GetParent(IID_PPV_ARGS(&pDXGIAdapter)) == S_OK)