Merge the two legacy ps_1_x work-arounds into one if block in order to avoid...

Merge the two legacy ps_1_x work-arounds into one if block in order to avoid falling back to 1_x even if 2_x is supported. Thanks to DeM0nFiRe for help on this topic.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@2495 dfc29bdd-3216-0410-991c-e03cc46cb475

source/Irrlicht/CD3D9HLSLMaterialRenderer.cpp

@@ -182,7 +182,10 @@ bool CD3D9HLSLMaterialRenderer::createHLSLPixelShader(const char* pixelShaderPro
 		flags |= D3DXSHADER_ENABLE_BACKWARDS_COMPATIBILITY;
 #endif
 #if defined(_IRR_D3D_USE_LEGACY_HLSL_COMPILER) && defined(D3DXSHADER_USE_LEGACY_D3DX9_31_DLL)
-	flags |= D3DXSHADER_USE_LEGACY_D3DX9_31_DLL;
+#ifdef D3DXSHADER_ENABLE_BACKWARDS_COMPATIBILITY
+	else
+#endif
+		flags |= D3DXSHADER_USE_LEGACY_D3DX9_31_DLL;
 #endif
 
 #ifdef _IRR_D3D_NO_SHADER_DEBUGGING