io: simplified a small part of copyBuffer

Change-Id: I0b7052103174f0864ee9714f76f8f78f2a988777
Reviewed-on: https://go-review.googlesource.com/30719
Reviewed-by: Joe Tsai <thebrokentoaster@gmail.com>
Run-TryBot: Joe Tsai <thebrokentoaster@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>

diff --git a/src/io/io.go b/src/io/io.go
index 19d0ae5addb3b7ba793bcd22f2e25767d37b26aa..3cab7288c97f5e8532e22bc796aee90fca8d730f 100644 (file)
--- a/src/io/io.go
+++ b/src/io/io.go
@@ -402,11 +402,10 @@ func copyBuffer(dst Writer, src Reader, buf []byte) (written int64, err error) {
                                break
                        }
                }
-               if er == EOF {
-                       break
-               }
                if er != nil {
-                       err = er
+                       if er != EOF {
+                               err = er
+                       }
                        break
                }
        }