adb: fix double close in jdwp_service.

Bug: http://b/78793027
Test: treehugger
Change-Id: Ie66d12e70bdaf09148e3d672e3c7c3da9e8ab2fe
(cherry picked from commit b7a9956cbc1cd8b1ffff86d13c6bea893a65c74d)
1 file changed