XmlBlock: Avoid potential NULL dereference

We move our dereference after the NULL check.

Test: TreeHugger
Change-Id: I8334be8faf67752e9c0dddf97b133b92b4a7f345

core/jni/android_util_XmlBlock.cpp

@@ -81,12 +81,12 @@ static jlong android_content_XmlBlock_nativeCreateParseState(JNIEnv* env, jobjec
     }
 
     ResXMLParser* st = new ResXMLParser(*osb);
-    st->setSourceResourceId(res_id);
     if (st == NULL) {
         jniThrowException(env, "java/lang/OutOfMemoryError", NULL);
         return 0;
     }
 
+    st->setSourceResourceId(res_id);
     st->restart();
 
     return reinterpret_cast<jlong>(st);