Make VCardComposer create the instance for mHandlerList.
Make VCardComposer create the instance for mHandlerList.

Previously the creation was delayed until addHandler(), which
had been required to be called.

However, after VCardComoser's support toward PBAP stuffs,
the guarantee was not true any more.

So by creating the instance in constructor, we refrain NPE during
finalize() when PBAP uses VCardComposer.

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base