Fix block processing job created twice when processing missing parent block (#67)

* Fix block processing job created twice in watcher

* Fix block processing job for missing parent blocks

packages/graph-node/src/loader.ts

@@ -159,7 +159,6 @@ export const instantiate = async (
           // TODO: Check for function overloading.
           let result = await contract[functionName](...functionParams);
 
-          // TODO: Check for function overloading.
           // Using function signature does not work.
           const { outputs } = contract.interface.getFunction(functionName);
           assert(outputs);

packages/graph-node/test/subgraph/example1/src/mapping.ts

@@ -143,7 +143,6 @@ export function testStructEthCall (): void {
   log.debug('In test struct eth call', []);
 
   // Bind the contract to the address that emitted the event.
-  // TODO: Address.fromString throws error in WASM module instantiation.
   const contractAddress = dataSource.address();
   const contract = Example1.bind(contractAddress);