Minimized the the release recreation race condition by writing the current sha to the comment section.

.appveyor/prepareDeploy.ps1

@@ -35,9 +35,9 @@ if(!$releaseId){
 	Return;
 }
 
-if($result.assets.length <= 1){
-    # The other build already recreated the release
-	Write-Host "The other build already recreated the release"
+if($result.body -contains $Env:APPVEYOR_REPO_COMMIT){
+    # An other build already recreated the release
+	Write-Host "An other build already recreated the release"
 	Return;
 }
 

appveyor.yml

@@ -98,7 +98,7 @@ deploy:
 - provider: GitHub
   tag: $(APPVEYOR_REPO_TAG_NAME)
   release: Latest Nightly build
-  description: 
+  description: $(APPVEYOR_REPO_COMMIT)
   auth_token:
     secure: JSlN/em0JdspVn8jwaQ4IjugY6OQi0au4Qq0rhctJmcfGMaEGnUAOmDFULI48REW
   artifact: ReleaseZip