Acquire the global lock when the
dump method is called.

This should prevent a race condition
between stop() and dump().

stop() already acquires the global lock
when it calls validateAndCall().

Bug: 274641043
Test: adb shell dumpsys wifi # validates dump()
Change-Id: Ie2df0861308954cd2e399c9604d4ae0dcddf95fb
1 file changed