ComparatorCombinatorsInspection: fix chain extraction for incomplete code

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/comparatorCombinators/beforeChainComparisonIncomplete.java

@@ -0,0 +1,9 @@
+// "Replace with Comparator chain" "false"
+
+import java.util.*;
+
+public class Main {
+  Comparator<String> cmp = (a, b) -> <caret>{
+    int res = a.substring(1).compareTo()
+  }
+}