tree 28141a425e932cf0782032e331f1dd0cbe04f4cb
parent e862350bb2eb3d3eda526da7f3b6d5c2dd40a445
author Spencer Low <CompareAndSwap@gmail.com> 1422233836 -0800
committer Spencer Low <CompareAndSwap@gmail.com> 1422402134 -0800

adb: tracing: don't make strings if runtime tracing is disabled

If tracing was not enabled (the ADB_TRACE environment variable was not
set specially), writex() and readx() would still call dump_hex() which
would construct hex tracing strings, which would be immediately
discarded and not printed (because tracing is not enabled).

The fix is to only call dump_hex() if ADB_TRACING evalutes to true, the
same way that dump_packet() is only called if ADB_TRACING evaluates to
true.

Change-Id: I1651680da344389475ebdeea77ba1982960d5764
Signed-off-by: Spencer Low <CompareAndSwap@gmail.com>