core/vm: minor code formatting ethereum#28199 (#1235)

Adding a space beween function opOrigin() and opcCaller() in instruciton.go.
Adding a space beween function opkeccak256()  and opAddress() in instruciton.go.

Co-authored-by: hzysvilla <[email protected]>

Author: gzliudan

core/vm/instructions.go

@@ -251,6 +251,7 @@ func opKeccak256(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) (
 	size.SetBytes(interpreter.hasherBuf[:])
 	return nil, nil
 }
+
 func opAddress(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
 	scope.Stack.push(new(uint256.Int).SetBytes(scope.Contract.Address().Bytes()))
 	return nil, nil
@@ -267,6 +268,7 @@ func opOrigin(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]b
 	scope.Stack.push(new(uint256.Int).SetBytes(interpreter.evm.Origin.Bytes()))
 	return nil, nil
 }
+
 func opCaller(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
 	scope.Stack.push(new(uint256.Int).SetBytes(scope.Contract.Caller().Bytes()))
 	return nil, nil