Java: Add braces when extracting method from then/else branch or loop body (IDEA-181096)

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

@@ -0,0 +1,12 @@
+class ForIf {
+    String foo(int[] a, boolean b) {
+        for (int x : a) <selection>if (b) {
+            String s = bar(x);
+            if (s != null) return s;
+        }</selection>
+
+        return null;
+    }
+
+    String bar(int x) { return "";}
+}