Empty search query causes shiny

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Login to WIAB
2. Clear the search box.
3. Hit enter.

What is the expected output? What do you see instead?
Expected: Not sure what should be the expected result, in GWave all waves are 
displayed. Surely no exception should be thrown.
Actual: Shiny with the following error:
One or more exceptions caught, see full set in UmbrellaException#getCauses
  Unknown.cG (Unknown source:0)
  Unknown.pG (Unknown source:0)
  Unknown.HW (Unknown source:0)
  Unknown.dW (Unknown source:0)
  Unknown.hW (Unknown source:0)
  Unknown.RV (Unknown source:0)
  Unknown.eHb (Unknown source:0)
Caused by: query cannot be empty
  Unknown.cG (Unknown source:0)
  Unknown.eTb (Unknown source:0)
  Unknown.qD (Unknown source:0)
  Unknown.ylc (Unknown source:0)
  Unknown.Tlc (Unknown source:0)
  Unknown.moc (Unknown source:0)
  Unknown.enc (Unknown source:0)

I suggest that empty query should be replaced with some default query, i.e. 
"in:inbox".

Original issue reported on code.google.com by vega113 on 25 Feb 2011 at 6:30

[GoogleCodeExporter]

please review patch at: URL: http://codereview.waveprotocol.org/550001

Original comment by vega113 on 25 Feb 2011 at 6:32

• Changed state: Started

[GoogleCodeExporter]

fixed by 6b1dc65306

Original comment by vega113 on 26 Feb 2011 at 10:13

• Changed state: Fixed