Don't set a user agent if not present

NickCraver · NickCraver · commit 91016a7e2232 · 2018-06-06T20:40:14.000-04:00
diff --git a/src/StackExchange.Utils.Http/DefaultHttpClientPool.cs b/src/StackExchange.Utils.Http/DefaultHttpClientPool.cs
@@ -50,7 +50,10 @@ private HttpClient CreateHttpClient(HttpClientCacheKey options)
                     }
                 }
             };
-            client.DefaultRequestHeaders.Add("User-Agent", Settings.UserAgent);
+            if (!string.IsNullOrEmpty(Settings.UserAgent))
+            {
+                client.DefaultRequestHeaders.Add("User-Agent", Settings.UserAgent);
+            }
             return client;
         }
 

Original file line number	Diff line number	Diff line change
`@@ -50,7 +50,10 @@ private HttpClient CreateHttpClient(HttpClientCacheKey options)`
`50`	`50`	`}`
`51`	`51`	`}`
`52`	`52`	`};`
`53`		`- client.DefaultRequestHeaders.Add("User-Agent", Settings.UserAgent);`
	`53`	`+ if (!string.IsNullOrEmpty(Settings.UserAgent))`
	`54`	`+ {`
	`55`	`+ client.DefaultRequestHeaders.Add("User-Agent", Settings.UserAgent);`
	`56`	`+ }`
`54`	`57`	`return client;`
`55`	`58`	`}`
`56`	`59`