1 files changed, 5 insertions, 5 deletions

diff --git a/vendor/golang.org/x/net/http2/flow.go b/vendor/golang.org/x/net/http2/flow.go
index 957de25..cea601f 100644
--- a/vendor/golang.org/x/net/http2/flow.go
+++ b/vendor/golang.org/x/net/http2/flow.go
@@ -41,10 +41,10 @@ func (f *flow) take(n int32) {
 // add adds n bytes (positive or negative) to the flow control window.
 // It returns false if the sum would exceed 2^31-1.
 func (f *flow) add(n int32) bool {
-        remain := (1<<31 - 1) - f.n
-        if n > remain {
-                return false
+        sum := f.n + n
+        if (sum > n) == (f.n > 0) {
+                f.n = sum
+                return true
         }
-        f.n += n
-        return true
+        return false
 }