Fix detecting issues in indented code inside comments.

godot.go

@@ -124,7 +124,7 @@ func checkComment(comment string) (line int, ok bool) {
 func checkLastChar(s string) bool {
 	// Don't check comments starting with space indentation - they may
 	// contain code examples, which shouldn't end with period
-	if strings.HasPrefix(s, "  ") || strings.HasPrefix(s, "\t") {
+	if strings.HasPrefix(s, "  ") || strings.HasPrefix(s, " \t") || strings.HasPrefix(s, "\t") {
 		return true
 	}
 	s = strings.TrimSpace(s)

godot_test.go

@@ -58,6 +58,12 @@ func TestCheckComment(t *testing.T) {
 			ok:      true,
 			line:    0,
 		},
+		{
+			name:    "singleline comment: code example without period and mixed indentation",
+			comment: "// \tx == y",
+			ok:      true,
+			line:    0,
+		},
 		{
 			name:    "singleline comment: empty line",
 			comment: "//",

testdata/example_checkall.go

@@ -42,7 +42,7 @@ type ObjectX struct {
 }
 
 // Declaration comment without a period, with an indented code example:
-//   co := ComplexObject{}
+//   co := ComplexObjectX{}
 //   fmt.Println(co) // PASS
 type ComplexObjectX struct {
 	// Exported field comment - always PASS
@@ -51,6 +51,13 @@ type ComplexObjectX struct {
 	secret int
 }
 
+// Declaration comment without a period, with a mixed indented code example:
+// 	co := MessageX{}
+// 	fmt.Println(co) // PASS
+type MessageX struct {
+	Type string
+}
+
 // Declaration multiline comment
 // second line
 // third line with a period PASS.

testdata/example_default.go

@@ -51,6 +51,13 @@ type ComplexObject struct {
 	secret int
 }
 
+// Declaration comment without a period, with a mixed indented code example:
+// 	co := Message{}
+// 	fmt.Println(co) // PASS
+type Message struct {
+	Type string
+}
+
 // Declaration multiline comment
 // second line
 // third line with a period PASS.