Update src/main/java/org/broadinstitute/hellbender/tools/walkers/Refe…

…renceConfidenceVariantContextMerger.java

Co-authored-by: Miguel Covarrubias <mcovarr@users.noreply.github.com>

src/main/java/org/broadinstitute/hellbender/tools/walkers/ReferenceConfidenceVariantContextMerger.java

@@ -552,7 +552,7 @@ private GenotypesContext mergeRefConfidenceGenotypes(final VariantContext vc,
                 }
                 if (g.hasAD()) {
                     int[]  perSampleIndexesOfRelevantAlleles = AlleleSubsettingUtils.getIndexesOfRelevantAllelesForGVCF(remappedAlleles, targetAlleles, vc.getStart(), g, false);
-                    final int[] AD = g.hasAD() ? AlleleSubsettingUtils.generateAD(g.getAD(), perSampleIndexesOfRelevantAlleles) : null;
+                    final int[] AD = AlleleSubsettingUtils.generateAD(g.getAD(), perSampleIndexesOfRelevantAlleles);
                     genotypeBuilder.AD(AD);
                 }
             }