[base] CustomDataMgr: setCustomData() is to return T* now instead of bool.
[base] CustomDataMgr: setCustomData() is to return T* now instead of bool.

this way we can directly reuse the return value.

xzero/x0,xzero/x0,christianparpart/x0,christianparpart/x0,christianparpart/x0,xzero/x0,christianparpart/x0,xzero/x0,christianparpart/x0,christianparpart/x0,xzero/x0,xzero/x0,christianparpart/x0