Fix null reference when processing light probe (#131)

Author: pmavridis

com.unity.render-pipelines.high-definition/CHANGELOG.md

@@ -530,6 +530,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Fixed compile error with XR SubsystemManager.
 - Fix for assertion triggering sometimes when saving a newly created lit shader graph (case 1230996)
 - Fixed culling of planar reflection probes that change position (case 1218651)
+- Fixed null reference when processing lightprobe (case 1235285)
 
 ### Changed
 - Color buffer pyramid is not allocated anymore if neither refraction nor distortion are enabled

com.unity.render-pipelines.high-definition/Runtime/Lighting/LightLoop/LightLoop.cs

@@ -2506,17 +2506,17 @@ int PreprocessVisibleProbes(HDCamera hdCamera, CullingResults cullResults, HDPro
                 {
                     var probe = cullResults.visibleReflectionProbes[probeIndex];
 
+                    if (probe.reflectionProbe == null
+                        || probe.reflectionProbe.Equals(null) || !probe.reflectionProbe.isActiveAndEnabled
+                        || !aovRequest.IsLightEnabled(probe.reflectionProbe.gameObject))
+                        continue;
+
                     ref ProcessedProbeData processedData = ref m_ProcessedReflectionProbeData[probeIndex];
                     PreprocessReflectionProbeData(ref processedData, probe, hdCamera);
 
                     if (TrivialRejectProbe(processedData, hdCamera))
                         continue;
 
-                    if (probe.reflectionProbe == null
-                        || probe.reflectionProbe.Equals(null) || !probe.reflectionProbe.isActiveAndEnabled
-                        || !aovRequest.IsLightEnabled(probe.reflectionProbe.gameObject))
-                        continue;
-
                     // Work around the data issues.
                     if (probe.localToWorldMatrix.determinant == 0)
                     {