memory leak

[aprz512]

i got memory leak report on DebounceSearchEmitterFragment.

the log info:
01-08 11:55:57.399 544-3247/com.morihacky.android.rxjava D/LeakCanary: In com.morihacky.android.rxjava:1.2:2.
01-08 11:55:57.399 544-3247/com.morihacky.android.rxjava D/LeakCanary: * com.morihacky.android.rxjava.fragments.DebounceSearchEmitterFragment has leaked:
01-08 11:55:57.399 544-3247/com.morihacky.android.rxjava D/LeakCanary: * GC ROOT thread java.lang.Thread. (named 'Thread-10')
01-08 11:55:57.399 544-3247/com.morihacky.android.rxjava D/LeakCanary: * references com.android.tools.profiler.support.event.InputConnectionWrapper.mTarget
01-08 11:55:57.399 544-3247/com.morihacky.android.rxjava D/LeakCanary: * references com.android.internal.widget.EditableInputConnection.mTextView
01-08 11:55:57.399 544-3247/com.morihacky.android.rxjava D/LeakCanary: * references android.support.v7.widget.AppCompatEditText.mParent
01-08 11:55:57.399 544-3247/com.morihacky.android.rxjava D/LeakCanary: * references android.widget.LinearLayout.mParent
01-08 11:55:57.399 544-3247/com.morihacky.android.rxjava D/LeakCanary: * references android.widget.LinearLayout.mChildren
01-08 11:55:57.399 544-3247/com.morihacky.android.rxjava D/LeakCanary: * references array android.view.View[].[2]
01-08 11:55:57.399 544-3247/com.morihacky.android.rxjava D/LeakCanary: * references android.widget.ListView.mAdapter
01-08 11:55:57.399 544-3247/com.morihacky.android.rxjava D/LeakCanary: * references com.morihacky.android.rxjava.fragments.DebounceSearchEmitterFragment$LogAdapter.this$0
01-08 11:55:57.399 544-3247/com.morihacky.android.rxjava D/LeakCanary: * leaks com.morihacky.android.rxjava.fragments.DebounceSearchEmitterFragment instance
01-08 11:55:57.399 544-3247/com.morihacky.android.rxjava D/LeakCanary: * Retaining: 1.2 kB.
01-08 11:55:57.399 544-3247/com.morihacky.android.rxjava D/LeakCanary: * Reference Key: 7ba3dadc-f535-4747-b4ec-ee266c90ebe6
01-08 11:55:57.399 544-3247/com.morihacky.android.rxjava D/LeakCanary: * Device: Google google Pixel sailfish
01-08 11:55:57.399 544-3247/com.morihacky.android.rxjava D/LeakCanary: * Android Version: 8.0.0 API: 26 LeakCanary: 1.5.1 1be44b3
01-08 11:55:57.399 544-3247/com.morihacky.android.rxjava D/LeakCanary: * Durations: watch=5445ms, gc=194ms, heap dump=2190ms, analysis=96209ms