Reduce timeout from 1000ms to 100ms

Using this with the Arduino `WiFiClient` makes simple requests really slow. Reduce the timeout in order to make it faster.

Author: carbotaniuman

src/HttpClient.h

@@ -340,7 +340,7 @@ class HttpClient : public Client
 
     // Number of milliseconds that we wait each time there isn't any data
     // available to be read (during status code and header processing)
-    static const int kHttpWaitForDataDelay = 1000;
+    static const int kHttpWaitForDataDelay = 100;
     // Number of milliseconds that we'll wait in total without receiving any
     // data before returning HTTP_ERROR_TIMED_OUT (during status code and header
     // processing)