Fix PatchException invocations.
Fix PatchException invocations.

Pylint missed this since it just assumed it was positional arg
passing.  Joy.

BUG=chromium-os:27415,chromium-os:30039,chromium-os:30043
TEST=manual, and upcoming tests that trigger this.

Change-Id: I8b15653ce809df2ced23e7bd4a695f088e8b5547
Reviewed-on: https://gerrit.chromium.org/gerrit/27936
Commit-Ready: Brian Harring <fdc2d0a2e2340b623587cee5ea8dff425d1eb1f3@chromium.org>
Tested-by: Brian Harring <fdc2d0a2e2340b623587cee5ea8dff425d1eb1f3@chromium.org>
Reviewed-by: David James <f231dc574bbeb62604660cbc162d1b8642a0a3af@chromium.org>

coreos/chromite,chadversary/chromiumos.chromite,bpsinc-native/src_third_party_chromite,zhang0137/chromite,bpsinc-native/src_third_party_chromite,chadversary/chromiumos.chromite,zhang0137/chromite,bpsinc-native/src_third_party_chromite,coreos/chromite,zhang0137/chromite,coreos/chromite