8180011: Cleaner native graphics device handling

Reviewed-by: serb, mschoene, rhalade

src/windows/native/sun/java2d/d3d/D3DGraphicsDevice.cpp

@@ -98,7 +98,7 @@ JNIEXPORT jstring JNICALL Java_sun_java2d_d3d_D3DGraphicsDevice_getDeviceIdNativ
 
     jstring ret = JNU_NewStringPlatform(env, pAdapterId);
 
-    delete pAdapterId;
+    delete[] pAdapterId;
 
     return ret;
 }