CCScheduler bug?

Hi, there.

I have found a problem in CCScheduler.
Below is the dumpped message.

*********** Crash dump: ***********
Build fingerprint: ’samsung/SHW-M250L/SHW-M250L:2.3.4/GINGERBREAD/EG15:user/release-keys’
pid: 23152, tid: 23163  >>> com.nextapps.BoooolyOnline.android.lgt.SmartWorld <<<
signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 00000000
Stack frame #00  pc 0028c88a  /data/data/com.nextapps.BoooolyOnline.android.lgt.SmartWorld/lib/libgame.so: Routine tick in /DevLibs/cocos2d-1.0.1-x-0.13.0-beta/cocos2dx/CCScheduler.cpp:711
Stack frame #01  pc 002acd96  /data/data/com.nextapps.BoooolyOnline.android.lgt.SmartWorld/lib/libgame.so: Routine drawScene in /DevLibs/cocos2d-1.0.1-x-0.13.0-beta/cocos2dx/CCDirector.cpp:187
Stack frame #02  pc 002ae124  /data/data/com.nextapps.BoooolyOnline.android.lgt.SmartWorld/lib/libgame.so: Routine mainLoop in /DevLibs/cocos2d-1.0.1-x-0.13.0-beta/cocos2dx/CCDirector.cpp:946
Stack frame #03  pc 002df170  /data/data/com.nextapps.BoooolyOnline.android.lgt.SmartWorld/lib/libgame.so: Routine Java_org_cocos2dx_lib_Cocos2dxRenderer_nativeOnPause in /DevLibs/cocos2d-1.0.1-x-0.13.0-beta/cocos2dx/platform/android/jni/MessageJni.cpp:57
Stack frame #04  pc 00017e74  /system/lib/libdvm.so
Stack frame #05  pc 0004982a  /system/lib/libdvm.so

And below is 711 line in CCScheduler.cpp.

elt = elt->hh.next;

I think that elt->hh.next can be NULL.
Is this a bug?