Allocate a one-byte IOBuffer for transfers that are zero-length.

chrome/browser/extensions/api/usb/usb_device_resource.cc

Index: chrome/browser/extensions/api/usb/usb_device_resource.cc
diff --git a/chrome/browser/extensions/api/usb/usb_device_resource.cc b/chrome/browser/extensions/api/usb/usb_device_resource.cc
index da8efdf499c5239c2131ab0b2e8ea709b6bd1ec1..bb0aaa68d88f76173f252997da6ca1d4872d4bd4 100644
--- a/chrome/browser/extensions/api/usb/usb_device_resource.cc
+++ b/chrome/browser/extensions/api/usb/usb_device_resource.cc
@@ -115,13 +115,13 @@ static scoped_refptr<net::IOBuffer> CreateBufferForTransfer(const T& input) {
     return NULL;
   }
 
-  scoped_refptr<net::IOBuffer> buffer = new net::IOBuffer(size);
+  scoped_refptr<net::IOBuffer> buffer = new net::IOBuffer(std::max(
+      static_cast<size_t>(1), size));
   if (!input.data.get()) {

[bryeung, 2012/08/13 15:22:28]

nit: this if and the one above should be brace-less

     return buffer;
   }
 
   memcpy(buffer->data(), input.data->data(), size);
-
   return buffer;
 }