In cycle collector dumps, allow much more room for document URLs. (Bug 652056) r=peterv

content/base/src/nsDocument.cpp

@@ -1808,7 +1808,7 @@ static const char* kNSURIs[] = {
 
 NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INTERNAL(nsDocument)
   if (NS_UNLIKELY(cb.WantDebugInfo())) {
-    char name[72];
+    char name[512];
     PRUint32 nsid = tmp->GetDefaultNamespaceID();
     nsCAutoString uri;
     if (tmp->mDocumentURI)