Fix var hiding bug in sync's UIModelWorker

Fix var hiding bug in sync's UIModelWorker

There's an extra declaration of error_info that hides the original
declaration.  We use the variable in the inner scope.  When the scope
ends, return the still-uninitialized variable from the outer scope.

This commit fixes that bug by removing the declaration in the inner
scope.

BUG=105994
TEST=


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=116538

[rlarocque, 2012-01-04 22:43:02]

Simple bug fix.  This blocks the set of patches for fixing issue 94670 because
the compiler will start complaining about the extra declaration when I refactor
the error detection.

[tim (not reviewing), 2012-01-05 00:14:01]

LGTM

[commit-bot: I haz the power, 2012-01-05 00:15:24]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/rlarocque@chromium.org/9087020/1

[commit-bot: I haz the power, 2012-01-05 00:55:28]

Try job failure for 9087020-1 (retry) on linux_clang for step "compile" (clobber
build).
It's a second try, previously, step "compile" failed.
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=linux_clan...

[commit-bot: I haz the power, 2012-01-05 17:55:18]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/rlarocque@chromium.org/9087020/1

[commit-bot: I haz the power, 2012-01-05 20:36:34]

Change committed as 116538