8261198: [macOS] Incorrect JNI parameters in number conversion in A11Y code

Backport-of: 4a89733

Author: Olga Mikhaltsova

src/java.desktop/macosx/native/libawt_lwawt/awt/JavaComponentAccessibility.m

@@ -964,14 +964,14 @@ - (BOOL)accessibilityIsIndexAttributeSettable
     }
     DECLARE_CLASS_RETURN(jnumber_Class, "java/lang/Number", nil);
     DECLARE_CLASS_RETURN(jinteger_Class, "java/lang/Integer", nil);
-    DECLARE_METHOD_RETURN(jm_intValue, jnumber_Class, "intValue", "()D", nil);
+    DECLARE_METHOD_RETURN(jm_intValue, jnumber_Class, "intValue", "()I", nil);
     DECLARE_METHOD_RETURN(jm_doubleValue, jnumber_Class, "doubleValue", "()D", nil);
     if ((*env)->IsInstanceOf(env, jnumber, jinteger_Class)) {
-        jint i = (*env)->CallIntMethod(env, jnumber_Class, jm_intValue);
+        jint i = (*env)->CallIntMethod(env, jnumber, jm_intValue);
         CHECK_EXCEPTION();
         return [NSNumber numberWithInteger:i];
     } else {
-        jdouble d = (*env)->CallDoubleMethod(env, jnumber_Class, jm_doubleValue);
+        jdouble d = (*env)->CallDoubleMethod(env, jnumber, jm_doubleValue);
         CHECK_EXCEPTION();
         return [NSNumber numberWithDouble:d];
     }