In progress: KT-7442 Inspection + intention to replace "if (xxx == null) return ..' with elvis

idea/testData/intentions/ifNullToElvis/OtherVar1.kt

@@ -0,0 +1,11 @@
+// IS_APPLICABLE: false
+class C {
+    var v: String? = null
+
+    fun foo(p: List<String?>): Int {
+        val v = p[0]
+        <caret>if (this.v == null) return -1
+        return v!!.length()
+    }
+}
+