Reviewed by Mitz.

        - fix http://bugs.webkit.org/show_bug.cgi?id=12180
          REGRESSION: Double-clicking on JS exception in JS log crashes in -[SharedBufferData initWithSharedBuffer:]

        * WebView/WebDataSource.mm: (-[WebDataSource data]): Added null check.



git-svn-id: svn://svn.chromium.org/blink/trunk@18767 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/WebKit/ChangeLog

+2007-01-11  Darin Adler  <darin@apple.com>
+
+        Reviewed by Mitz.
+
+        - fix http://bugs.webkit.org/show_bug.cgi?id=12180
+          REGRESSION: Double-clicking on JS exception in JS log crashes in -[SharedBufferData initWithSharedBuffer:]
+
+        * WebView/WebDataSource.mm: (-[WebDataSource data]): Added null check.
+
 2007-01-11  Darin Adler  <darin@apple.com>
 
         Reviewed by Hyatt.

third_party/WebKit/WebKit/WebView/WebDataSource.mm

@@ -377,7 +377,10 @@ static inline void addTypesFromClass(NSMutableDictionary *allTypes, Class objCCl
 
 - (NSData *)data
 {
-    return [_private->loader->mainResourceData()->createNSData() autorelease];
+    RefPtr<SharedBuffer> mainResourceData = _private->loader->mainResourceData();
+    if (!mainResourceData)
+        return nil;
+    return [mainResourceData->createNSData() autorelease];
 }
 
 - (id <WebDocumentRepresentation>)representation