check ref in foreach iterated value (IDEA-59874)

java/java-tests/testData/codeInsight/nullityinferrer/beforeParameterUsedInForeachIteratedValue.java

@@ -0,0 +1,7 @@
+import java.util.*;
+class Test {
+   void foo(List requests){
+        for (Object request : requests) {
+        }
+    }
+}