[cp-patches] Fix for GTk peers with Classpath 0.96.1

[Ian Rogers]

Hi,

attached is a patch required to make JNI GTk peers work on 32bit 
architectures.

Regards,
Ian
--- native/jni/gtk-peer/gtkpeer.c       2007-05-08 01:00:54.000000000 +0100
+++ native/jni/gtk-peer/gtkpeer.c       2007-10-17 10:49:25.000000000 +0100
@@ -102,11 +102,13 @@
 #else
 #if SIZEOF_VOID_P == 4
   pointerClass = (*env)->FindClass(env, "gnu/classpath/Pointer32");
-  pointerDataFID = (*env)->GetFieldID(env, pointerClass, "data", "I");
-
-  /* Find the Pointer32 constructor. */
-  pointerConstructorMID = (*env)->GetMethodID(env, pointerClass, "<init>",
-                                              "(I)V");
+  if (pointerClass != NULL)
+    {
+      pointerClass = (*env)->NewGlobalRef (env, pointerClass);
+      pointerDataFID = (*env)->GetFieldID (env, pointerClass, "data", "I");
+      pointerConstructorMID = (*env)->GetMethodID (env, pointerClass, "<init>",
+                                                   "(I)V");
+    }
 #else
 #error "Pointer size is not supported."
 #endif /* SIZEOF_VOID_P == 4 */