Add lost unsafeptr tests

pkg/analyzer/analyzer_test.go

@@ -22,7 +22,7 @@ func TestNilNil_Flags_CheckedTypes(t *testing.T) {
 	t.Parallel()
 
 	anlzr := analyzer.New()
-	if err := anlzr.Flags.Set("checked-types", "ptr"); err != nil {
+	if err := anlzr.Flags.Set("checked-types", "ptr,uintptr"); err != nil {
 		t.Fatal(err)
 	}
 	analysistest.Run(t, analysistest.TestData(), anlzr, "pointers-only")

pkg/analyzer/testdata/src/opposite-chan-map-only/positive.go

@@ -1,6 +1,9 @@
 package examples
 
-import "io"
+import (
+	"io"
+	"unsafe"
+)
 
 type User struct{}
 
@@ -16,6 +19,10 @@ func uintPtr0o() (uintptr, error) {
 	return 0o000, io.EOF
 }
 
+func unsafePtr() (unsafe.Pointer, error) {
+	return nil, nil
+}
+
 func chBi() (chan int, error) {
 	return make(chan int), io.EOF // want "return both a non-nil error and a valid value: use separate returns instead"
 }

pkg/analyzer/testdata/src/pointers-only/positive.go

@@ -1,5 +1,7 @@
 package examples
 
+import "unsafe"
+
 type User struct{}
 
 func primitivePtr() (*int, error) {
@@ -10,8 +12,12 @@ func structPtr() (*User, error) {
 	return nil, nil // want "return both a `nil` error and an invalid value: use a sentinel error instead"
 }
 
+func unsafePtr() (unsafe.Pointer, error) {
+	return nil, nil
+}
+
 func uintPtr0o() (uintptr, error) {
-	return 0o000, nil
+	return 0o000, nil // want "return both a `nil` error and an invalid value: use a sentinel error instead"
 }
 
 func chBi() (chan int, error) {