Bug 1033295 - Crash in nsWindowDataSource::GetWindowForResource. r=bsmedberg

2014-07-15 12:03:21 -05:00
parent 227dea8acd
commit 588696650f
1 changed files with 4 additions and 0 deletions
--- a/xpfe/components/windowds/nsWindowDataSource.cpp
+++ b/xpfe/components/windowds/nsWindowDataSource.cpp
@@ -292,6 +292,10 @@ NS_IMETHODIMP
 nsWindowDataSource::GetWindowForResource(const char *aResourceString,
                                         nsIDOMWindow** aResult)
 {
+    if (NS_WARN_IF(!aResourceString)) {
+        return NS_ERROR_INVALID_ARG;
+    }
+
    nsCOMPtr<nsIRDFResource> windowResource;
    gRDFService->GetResource(nsDependentCString(aResourceString),
                             getter_AddRefs(windowResource));