Java control flow: Don't allow extracting method if there's a potential side effect on the local variables in the case of exception thrown (IDEA-79444, IDEA-159916)

java/java-tests/testData/refactoring/extractMethod/UseVarInCatch2.java

@@ -0,0 +1,19 @@
+class A {
+    static class MyException extends Exception{ MyException(){ super(); } }
+
+    void foo() {
+        String s = "";
+        try {
+            <selection>s = "a";
+            bar();</selection>
+            s = "b";
+            bar();
+        } catch (MyException e) {
+            throw new RuntimeException(s, e);
+        }
+    }
+
+    void bar() throws MyException {
+        if (true) throw new MyException();
+    }
+}