BugID:17646749:[http2]modify stream init window size to 2^24
@@ -181,7 +181,7 @@ typedef struct {
*
* The initial window size for stream level flow control.
*/
-#define NGHTTP2_INITIAL_WINDOW_SIZE ((1 << 16) - 1)
+#define NGHTTP2_INITIAL_WINDOW_SIZE ((1 << 24) - 1)
/**
* @macro
*
