Add an empty os.Process.Signal implementation

QuLogic · deadprogram · commit 5d4f795aeca7 · 2022-03-13T12:53:23.000+01:00
This fixes compile of tests in Go 1.18, due to its use in
`src/internal/testenv/testenv.go`.
diff --git a/src/os/exec.go b/src/os/exec.go
@@ -55,3 +55,7 @@ func (p *Process) Wait() (*ProcessState, error) {
 func (p *Process) Kill() error {
 	return ErrNotImplemented
 }
+
+func (p *Process) Signal(sig Signal) error {
+	return ErrNotImplemented
+}

Original file line number	Diff line number	Diff line change
`@@ -55,3 +55,7 @@ func (p Process) Wait() (ProcessState, error) {`
`55`	`55`	`func (p *Process) Kill() error {`
`56`	`56`	`return ErrNotImplemented`
`57`	`57`	`}`
	`58`	`+`
	`59`	`+func (p *Process) Signal(sig Signal) error {`
	`60`	`+ return ErrNotImplemented`
	`61`	`+}`