check if variable execResult is defined (#15012) (#15015)

Co-authored-by: Zheng Hao Tang <[email protected]>

Co-authored-by: mihairatoiu <[email protected]>

Author: zhenghao104

Tasks/UniversalPackagesV0/package.json

@@ -1,6 +1,6 @@
 {
     "name": "universalpackages",
-    "version": "0.0.8",
+    "version": "0.0.9",
     "description": "Download or publish universal packages.",
     "main": "universalmain.js",
     "scripts": {

Tasks/UniversalPackagesV0/task.json

@@ -9,7 +9,7 @@
     "category": "Package",
     "version": {
         "Major": 0,
-        "Minor": 188,
+        "Minor": 190,
         "Patch": 0
     },
     "runsOn": [

Tasks/UniversalPackagesV0/task.loc.json

@@ -9,7 +9,7 @@
   "category": "Package",
   "version": {
     "Major": 0,
-    "Minor": 188,
+    "Minor": 190,
     "Patch": 0
   },
   "runsOn": [

Tasks/UniversalPackagesV0/universalpublish.ts

@@ -149,7 +149,7 @@ export async function run(artifactToolPath: string): Promise<void> {
             retries++; 
         }
 
-        if (execResult.code === packageAlreadyExistsError) {
+        if (execResult != null && execResult.code === packageAlreadyExistsError) {
             telemetry.logResult("Packaging", "UniversalPackagesCommand", execResult.code);
             throw new Error(tl.loc("Error_UnexpectedErrorArtifactTool",
                 execResult.code,