Fix log function for potential overflow

On LP64 system, unsigned long can be 64bit
Also clean out unused static variables.

Test: flash on ARM64 device
Bug: 32181382
Change-Id: I44b7ea8a6588c475a3979d7bddeb08da7f54c27a
diff --git a/libs/binder/IPCThreadState.cpp b/libs/binder/IPCThreadState.cpp
index 9b5f0d7..5d44d54 100644
--- a/libs/binder/IPCThreadState.cpp
+++ b/libs/binder/IPCThreadState.cpp
@@ -64,10 +64,6 @@
 
 namespace android {
 
-static const char* getReturnString(size_t idx);
-static const void* printReturnCommand(TextOutput& out, const void* _cmd);
-static const void* printCommand(TextOutput& out, const void* _cmd);
-
 // Static const and functions will be optimized out if not used,
 // when LOG_NDEBUG and references in IF_LOG_COMMANDS() are optimized out.
 static const char *kReturnStrings[] = {
@@ -526,8 +522,8 @@
         }
     } while (result != -ECONNREFUSED && result != -EBADF);
 
-    LOG_THREADPOOL("**** THREAD %p (PID %d) IS LEAVING THE THREAD POOL err=%p\n",
-        (void*)pthread_self(), getpid(), (void*)result);
+    LOG_THREADPOOL("**** THREAD %p (PID %d) IS LEAVING THE THREAD POOL err=%d\n",
+        (void*)pthread_self(), getpid(), result);
     
     mOut.writeInt32(BC_EXIT_LOOPER);
     talkWithDriver(false);