Fix warning and profile issue

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Editor/HDRenderPipelineMenuItems.cs

                         if (mat.HasProperty("_SubsurfaceProfile"))
                         {
                             CheckOutFile(VSCEnabled, mat);
-                            float value = mat.GetInt("_DiffusionProfile");
-                            mat.SetInt("_DiffusionProfile", 0);
+                            //float value = mat.GetInt("_DiffusionProfile");
+                            //mat.SetInt("_DiffusionProfile", 0);
 
                             EditorUtility.SetDirty(mat);
                         }
                                 if (mat.HasProperty("_SubsurfaceProfile" + x))
                                 {
                                     CheckOutFile(VSCEnabled, mat);
-                                    float value = mat.GetInt("_DiffusionProfile" + x);
-                                    mat.SetInt("_DiffusionProfile" + x, 0);
+                                    //float value = mat.GetInt("_DiffusionProfile" + x);
+                                    //mat.SetInt("_DiffusionProfile" + x, 0);
 
                                     EditorUtility.SetDirty(mat);
                                 }

ScriptableRenderPipeline/HDRenderPipeline/HDRP/Material/Lit/Lit.hlsl

     bsdfData.fresnel0               = bsdfData.enableSpecularColor ? surfaceData.specularColor : ComputeFresnel0(surfaceData.baseColor, surfaceData.metallic, DEFAULT_SPECULAR_VALUE);
 
     // Always assign even if not used, DIFFUSION_NEUTRAL_PROFILE_ID is 0
-    bsdfData.diffusionProfile == surfaceData.diffusionProfile;
+    bsdfData.diffusionProfile       = surfaceData.diffusionProfile;
     // Note: we have ZERO_INITIALIZE the struct so bsdfData.anisotropy == 0.0
 
     // In forward everything is statically know and we could theorically cumulate all the material features. So the code reflect it.
     bsdfData.normalWS = UnpackNormalOctEncode(float2(inGBuffer1.r, inGBuffer1.g));
 
     // metallic15 is range [0..12] if mettallic data is needed
-    float metallic = (metallic15 <= GBUFFER_LIT_ANISOTROPIC_UPPER_BOUND) ? metallic15 / GBUFFER_LIT_ANISOTROPIC_UPPER_BOUND : 0.0;
+    float metallic = (metallic15 <= GBUFFER_LIT_ANISOTROPIC_UPPER_BOUND) ? metallic15 * (1.0 / GBUFFER_LIT_ANISOTROPIC_UPPER_BOUND) : 0.0;
     bsdfData.diffuseColor = ComputeDiffuseColor(baseColor, metallic);
     bsdfData.fresnel0 = bsdfData.enableSpecularColor ? inGBuffer2.rgb : ComputeFresnel0(baseColor, metallic, DEFAULT_SPECULAR_VALUE);