Regression test for #42134,
"rename fails to update doc comment for local variable of function type"

-- 1.go --
package issue42134

func _() {
	// foo computes things.
	foo := func() {}

	foo() //@rename("foo", "bar", fooTobar)
}
-- @fooTobar/1.go --
@@ -4,2 +4,2 @@
-	// foo computes things.
-	foo := func() {}
+	// bar computes things.
+	bar := func() {}
@@ -7 +7 @@
-	foo() //@rename("foo", "bar", fooTobar)
+	bar() //@rename("foo", "bar", fooTobar)
-- 2.go --
package issue42134

import "fmt"

func _() {
	// minNumber is a min number.
	// Second line.
	minNumber := min(1, 2)
	fmt.Println(minNumber) //@rename("minNumber", "res", minNumberTores)
}

func min(a, b int) int { return a + b }
-- @minNumberTores/2.go --
@@ -6 +6 @@
-	// minNumber is a min number.
+	// res is a min number.
@@ -8,2 +8,2 @@
-	minNumber := min(1, 2)
-	fmt.Println(minNumber) //@rename("minNumber", "res", minNumberTores)
+	res := min(1, 2)
+	fmt.Println(res) //@rename("minNumber", "res", minNumberTores)
-- 3.go --
package issue42134

func _() {
	/*
	tests contains test cases
	*/
	tests := []struct { //@rename("tests", "testCases", testsTotestCases)
		in, out string
	}{}
	_ = tests
}
-- @testsTotestCases/3.go --
@@ -5 +5 @@
-	tests contains test cases
+	testCases contains test cases
@@ -7 +7 @@
-	tests := []struct { //@rename("tests", "testCases", testsTotestCases)
+	testCases := []struct { //@rename("tests", "testCases", testsTotestCases)
@@ -10 +10 @@
-	_ = tests
+	_ = testCases
-- 4.go --
package issue42134

func _() {
	// a is equal to 5. Comment must stay the same

	a := 5
	_ = a //@rename("a", "b", aTob)
}
-- @aTob/4.go --
@@ -6,2 +6,2 @@
-	a := 5
-	_ = a //@rename("a", "b", aTob)
+	b := 5
+	_ = b //@rename("a", "b", aTob)