coonsume gas on ask external data

Author: colmazia

packages/vm/src/lib.rs

@@ -249,7 +249,7 @@ where
 
                     // consume gas equal size of span when write calldata for raw request
                     // vm.consume_gas(span_size  as u32)?;
-                    // env.decrease_gas_left(span_size as u32)?;
+                    env.decrease_gas_left(span_size as u32)?;
 
                     let memory = env.memory()?;
                     require_mem_range(memory.size().bytes().0, (ptr + span_size) as usize)?;