Fix mIsLooper initialization.

It was left uninitialized, and so potentially
incorrect.

Bug: 70257588
Test: builds
Change-Id: Id324cb4ed036a8a2cdd2cc960dcca39b06f954d2

IPCThreadState.cpp

diff --git a/IPCThreadState.cpp b/IPCThreadState.cpp
index feaef3b..71f6023 100644
--- a/IPCThreadState.cpp
+++ b/IPCThreadState.cpp
@@ -706,8 +706,8 @@
     : mProcess(ProcessState::self()),
       mMyThreadId(gettid()),
       mStrictModePolicy(0),
-      mLastTransactionBinderFlags(0)
-{
+      mLastTransactionBinderFlags(0),
+      mIsLooper(false) {
     pthread_setspecific(gTLS, this);
     clearCaller();
     mIn.setDataCapacity(256);