ResultPath: Check object type before casting to int (graphql-java#3765)

* Check object type before casting to int

* ResultPathTest: Check object type before casting to int

Author: alex-cova

src/main/java/graphql/execution/ResultPath.java

@@ -149,8 +149,10 @@ public static ResultPath fromList(List<?> objects) {
         for (Object object : objects) {
             if (object instanceof String) {
                 path = path.segment(((String) object));
-            } else {
+            } else if (object instanceof Integer) {
                 path = path.segment((int) object);
+            } else if (object != null) {
+                path = path.segment(object.toString());
             }
         }
         return path;

src/test/groovy/graphql/execution/ResultPathTest.groovy

@@ -212,6 +212,13 @@ class ResultPathTest extends Specification {
         path.toList() == ["a", "b"]
     }
 
+    def "pass any other object than string or int"(){
+        when:
+        ResultPath.fromList(["a", "b", true])
+
+        then:
+        notThrown(ClassCastException)
+    }
 
     def "can append paths"() {
         when: