[java-atk-wrapper] Fix jni call in jawimpl

[Samuel Thibault <sthibaul src gnome org>]

commit 96fd634d83dc416b27144e837f234318aff293e8
Author: Giuseppe <giuseppecapaldo93 gmail com>
Date:   Wed Jul 3 16:15:13 2019 +0200

    Fix jni call in jawimpl

 jni/src/jawimpl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/jni/src/jawimpl.c b/jni/src/jawimpl.c
index 9f987c3..21391d4 100644
--- a/jni/src/jawimpl.c
+++ b/jni/src/jawimpl.c
@@ -311,7 +311,7 @@ jaw_impl_get_instance_from_jaw (JNIEnv *jniEnv, jobject ac)
 {
   jclass classWrapper = (*jniEnv)->FindClass(jniEnv, "org/GNOME/Accessibility/AtkWrapper");
   jmethodID jmid = (*jniEnv)->GetStaticMethodID(jniEnv, classWrapper, "getInstanceFromSwing", 
"(Ljavax/accessibility/AccessibleContext;)J");
-  jlong ptr = (*jniEnv)->CallStaticObjectMethod(jniEnv, classWrapper, jmid, ac);
+  jlong ptr = (*jniEnv)->CallStaticLongMethod(jniEnv, classWrapper, jmid, ac);
   return ptr;
 }