Fix ExploitabilityLinuxUtilsTest::DisassembleBytesTest to not fail when temp file ends with 0

Fix ExploitabilityLinuxUtilsTest::DisassembleBytesTest to not fail when temp file ends with 0

R=ivanpe@chromium.org
BUG=https://bugs.chromium.org/p/google-breakpad/issues/detail?id=668

Committed: https://chromium.googlesource.com/breakpad/breakpad/+/86d5e9e7f94a9cc90c9fe90584d7c8eda6057d17

[Ted Mielczarek, 2015-11-30 18:34:04]

In case it's not clear, the objdump output looks like:
```
/tmp/whatever:     file format binary


Disassembly of section .data:

0000000000000000 <.data>:
   0:	c7 00 05 00 00 00    	mov    DWORD PTR [rax],0x5

```

Previously the test was looking for "0:" to find the line where disassembly
starts, but that was failing when the temp file name ended with zero because
that test would match that line.

I changed the code to match the "<.data>" line that is immediately before the
disassembly, and then read one more line to get the disassembly.

[ivanpe, 2015-11-30 18:56:21]

On 2015/11/30 18:34:04, Ted Mielczarek wrote:
> In case it's not clear, the objdump output looks like:
> ```
> /tmp/whatever:     file format binary
> 
> 
> Disassembly of section .data:
> 
> 0000000000000000 <.data>:
>    0:	c7 00 05 00 00 00    	mov    DWORD PTR [rax],0x5
> 
> ```
> 
> Previously the test was looking for "0:" to find the line where disassembly
> starts, but that was failing when the temp file name ended with zero because
> that test would match that line.
> 
> I changed the code to match the "<.data>" line that is immediately before the
> disassembly, and then read one more line to get the disassembly.

LGTM

[Ted Mielczarek, 2015-11-30 19:05:10]

Description was changed from

==========
Fix ExploitabilityLinuxUtilsTest::DisassembleBytesTest to not fail when temp
file ends with 0

R=ivanpe@chromium.org
BUG=https://bugs.chromium.org/p/google-breakpad/issues/detail?id=668
==========

to

==========
Fix ExploitabilityLinuxUtilsTest::DisassembleBytesTest to not fail when temp
file ends with 0

R=ivanpe@chromium.org
BUG=https://bugs.chromium.org/p/google-breakpad/issues/detail?id=668

Committed:
https://chromium.googlesource.com/breakpad/breakpad/+/86d5e9e7f94a9cc90c9fe90...
==========

[Ted Mielczarek, 2015-11-30 19:05:11]

Committed patchset #1 (id:1) manually as
86d5e9e7f94a9cc90c9fe90584d7c8eda6057d17 (presubmit successful).