Check Proxy for null before assigning to the underlying WebRequest.Proxy

Google/GoogleGeocoder.cs

@@ -313,7 +313,10 @@ private HttpWebRequest BuildWebRequest(string type, string value)
 				url = BusinessKey.GenerateSignature(url);
 
 			var req = WebRequest.Create(url) as HttpWebRequest;
-			req.Proxy = Proxy;
+			if(this.Proxy != null) 
+			{
+				req.Proxy = Proxy;
+			}
 			req.Method = "GET";
 			return req;
 		}
@@ -461,4 +464,4 @@ public RequestState(HttpWebRequest request, CancellationToken? cancellationToken
 			}
 		}
 	}
-}
+}

Microsoft/BingMapsGeocoder.cs

@@ -299,7 +299,10 @@ private IEnumerable<BingAddress> ParseResponse(Json.Response response)
 		private HttpWebRequest CreateRequest(string url)
 		{
 			var request = WebRequest.Create(url) as HttpWebRequest;
-			request.Proxy = Proxy;
+			if(this.Proxy != null) 
+			{
+				request.Proxy = this.Proxy;
+			}
 			return request;
 		}
 
@@ -404,4 +407,4 @@ public RequestState(HttpWebRequest request, CancellationToken? cancellationToken
 			}
 		}
 	}
-}
+}