Added testcase for creation of metadata with null pointers.

llvm-svn: 42609
diff --git a/llvm/test/FrontendObjC/2007-10-03-MetadataPointers.mm b/llvm/test/FrontendObjC/2007-10-03-MetadataPointers.mm
new file mode 100644
index 0000000..ca5ff85
--- /dev/null
+++ b/llvm/test/FrontendObjC/2007-10-03-MetadataPointers.mm
@@ -0,0 +1,7 @@
+// RUN: %llvmgcc -x objective-c++ -c %s -o /dev/null
+
+@class NSImage;
+void bork() {
+  NSImage *nsimage;
+  [nsimage release];
+}