[ofw] memory violation in wv_srq Query

[Hefty, Sean]

Copying ofw mail list:

> I got a memory violation error in wv_srq.cpp Query() function around line
> 202. It seems using uninitialized verbsData.output_size for memcpy. The
> verbsData.input_size is initialized in WvPreQueryQp (wvuverbs.cpp), and it
> has a similar memcpy in this function too.
> 
> Could this be a bug? It happens when I call ibv_modify_srq() in the
> application.

I'm not sure if any other app has ever called through the SRQ code path.  I'll take a look at this.

- Sean