added sonar fixes

Author: malavikakrishnan123

src/LCT.Common/TelemetryHelper.cs

@@ -31,7 +31,7 @@ public TelemetryHelper(CommonAppSettings appSettings)
 
             telemetry_ = new LCT.Telemetry.Telemetry(TelemetryConstant.Type, new Dictionary<string, string>
                 {
-                { "InstrumentationKey", appSettings.Telemetry.ApplicationInsightInstrumentKey }
+                { "InstrumentationKey", appSettings?.Telemetry?.ApplicationInsightInstrumentKey ?? string.Empty }
             });
         }
 

src/LCT.PackageIdentifier/ConanProcessor.cs

@@ -392,8 +392,18 @@ private static void GetPackagesForBom(ref List<Component> lstComponentForBOM, re
 
             ConanPackage package = nodePackages.Where(x => x.Id == "0").FirstOrDefault();
             List<string> directDependencies = new List<string>();
-            if (package.Dependencies != null) { directDependencies.AddRange(package.Dependencies); }
-            if (package.DevDependencies != null) { directDependencies.AddRange(package.DevDependencies); }
+            if (package != null)
+            {
+                if (package.Dependencies != null)
+                {
+                    directDependencies.AddRange(package.Dependencies);
+                }
+
+                if (package.DevDependencies != null)
+                {
+                    directDependencies.AddRange(package.DevDependencies);
+                }
+            }
 
             // Ignoring the root node as it is the package information node and we are anyways considering all
             // nodes in the lock file.

src/LCT.PackageIdentifier/MavenProcessor.cs

@@ -383,7 +383,10 @@ private static AqlResult GetJfrogArtifactoryRepoDetials(List<AqlResult> aqlResul
                 aqlResult = aqlResults.FirstOrDefault(x => x.Repo.Equals(repoName));
                 jfrogRepoPath = GetJfrogRepoPath(aqlResult);
             }
-            aqlResult.Repo ??= repoName;
+            if (aqlResult != null)
+            {
+                aqlResult.Repo ??= repoName;
+            }
             return aqlResult;
         }