dont emit error messages when sheets canceled after doc disconnect

content/html/style/src/nsCSSLoader.cpp

@@ -748,15 +748,19 @@ CSSLoaderImpl::DidLoadStyle(nsIUnicharStreamLoader* aLoader,
       Cleanup(key, aLoadData);
     }
   }
-  else {  // load failed, cleanup    
+  else {  // load failed or document now gone, cleanup    
+    if (mDocument) {  // still have doc, must have failed
       // Dump error message to console.
       const char *url;
-    if (nsnull != aLoadData->mURL) 
+      if (nsnull != aLoadData->mURL) {
         aLoadData->mURL->GetSpec(&url);
-    else
+      }
+      else {
         url = "";      
+      }
       cerr << "CSSLoaderImpl::DidLoadStyle: Load of URL '" << url 
         << "' failed.  Error code: " << NS_ERROR_GET_CODE(aStatus) << "\n";
+    }
 
     URLKey  key(aLoadData->mURL);
     Cleanup(key, aLoadData);

layout/html/style/src/nsCSSLoader.cpp

@@ -748,15 +748,19 @@ CSSLoaderImpl::DidLoadStyle(nsIUnicharStreamLoader* aLoader,
       Cleanup(key, aLoadData);
     }
   }
-  else {  // load failed, cleanup    
+  else {  // load failed or document now gone, cleanup    
+    if (mDocument) {  // still have doc, must have failed
       // Dump error message to console.
       const char *url;
-    if (nsnull != aLoadData->mURL) 
+      if (nsnull != aLoadData->mURL) {
         aLoadData->mURL->GetSpec(&url);
-    else
+      }
+      else {
         url = "";      
+      }
       cerr << "CSSLoaderImpl::DidLoadStyle: Load of URL '" << url 
         << "' failed.  Error code: " << NS_ERROR_GET_CODE(aStatus) << "\n";
+    }
 
     URLKey  key(aLoadData->mURL);
     Cleanup(key, aLoadData);

layout/style/nsCSSLoader.cpp

@@ -748,15 +748,19 @@ CSSLoaderImpl::DidLoadStyle(nsIUnicharStreamLoader* aLoader,
       Cleanup(key, aLoadData);
     }
   }
-  else {  // load failed, cleanup    
+  else {  // load failed or document now gone, cleanup    
+    if (mDocument) {  // still have doc, must have failed
       // Dump error message to console.
       const char *url;
-    if (nsnull != aLoadData->mURL) 
+      if (nsnull != aLoadData->mURL) {
         aLoadData->mURL->GetSpec(&url);
-    else
+      }
+      else {
         url = "";      
+      }
       cerr << "CSSLoaderImpl::DidLoadStyle: Load of URL '" << url 
         << "' failed.  Error code: " << NS_ERROR_GET_CODE(aStatus) << "\n";
+    }
 
     URLKey  key(aLoadData->mURL);
     Cleanup(key, aLoadData);