goprotobuf: Run gofmt over the tree.

R=r
CC=golang-dev
http://codereview.appspot.com/5294047
diff --git a/proto/lib.go b/proto/lib.go
index a24c780..26d84ae 100644
--- a/proto/lib.go
+++ b/proto/lib.go
@@ -198,9 +198,9 @@
 	index     int        // write point
 	freelist  [10][]byte // list of available buffers
 	nfreelist int        // number of free buffers
-	ptr uintptr // used to avoid a heap allocation.
+	ptr       uintptr    // used to avoid a heap allocation.
 	// pools of basic types to amortize allocation.
-	bools []bool
+	bools  []bool
 	int32s []int32
 	int64s []int64
 }