made http_stream and proxy_base support builds with exceptions disabled

src/http_stream.cpp

@@ -44,7 +44,8 @@ namespace libtorrent
 		if (e || i == tcp::resolver::iterator())
 		{
 			(*h)(e);
-			close();
+			asio::error_code ec;
+			close(ec);
 			return;
 		}
 
@@ -57,7 +58,8 @@ namespace libtorrent
 		if (e)
 		{
 			(*h)(e);
-			close();
+			asio::error_code ec;
+			close(ec);
 			return;
 		}
 
@@ -89,7 +91,8 @@ namespace libtorrent
 		if (e)
 		{
 			(*h)(e);
-			close();
+			asio::error_code ec;
+			close(ec);
 			return;
 		}
 
@@ -104,7 +107,8 @@ namespace libtorrent
 		if (e)
 		{
 			(*h)(e);
-			close();
+			asio::error_code ec;
+			close(ec);
 			return;
 		}
 
@@ -134,7 +138,8 @@ namespace libtorrent
 			if (status == 0)
 			{
 				(*h)(asio::error::operation_not_supported);
-				close();
+				asio::error_code ec;
+				close(ec);
 				return;
 			}
 
@@ -143,7 +148,8 @@ namespace libtorrent
 			if (code != 200)
 			{
 				(*h)(asio::error::operation_not_supported);
-				close();
+				asio::error_code ec;
+				close(ec);
 				return;
 			}