Compile fix for GCC, cannot construct an LLSD object with NULL.
Compile fix for GCC, cannot construct an LLSD object with NULL.

gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm