Adds a thrownby var that's used by admin logging.

code/modules/admin/verbs/buildmode.dm

@@ -189,10 +189,10 @@
 
 				var/type = input(usr,"Select Generator Type","Type") as null|anything in gen_paths
 				if(!type) return
-				
+
 				master.generator_path = type
 				master.cornerA = null
-				master.cornerB = null 
+				master.cornerB = null
 
 	return 1
 
@@ -292,7 +292,7 @@
 				holder.throw_atom = object
 			if(pa.Find("right"))
 				if(holder.throw_atom)
-					holder.throw_atom.throw_at(object, 10, 1)
+					holder.throw_atom.throw_at(object, 10, 1,user)
 					log_admin("Build Mode: [key_name(usr)] threw [holder.throw_atom] at [object] ([object.x],[object.y],[object.z])")
 		if(AREA_BUILDMODE)
 			if(!holder.cornerA)
@@ -300,7 +300,7 @@
 				return
 			if(holder.cornerA && !holder.cornerB)
 				holder.cornerB = get_turf(object)
-			
+
 			if(pa.Find("left")) //rectangular
 				if(holder.cornerA && holder.cornerB)
 					if(!holder.generator_path)