Fix build of http client (#62)

Alexander-Degtyar · web-flow · commit 8b0f7aab0c47 · 2021-07-07T11:35:33.000-07:00
diff --git a/include/signalrclient/http_client.h b/include/signalrclient/http_client.h
@@ -8,6 +8,7 @@
 #include <functional>
 #include <map>
 #include <chrono>
+#include <exception>
 
 namespace signalr
 {
