Fix Bug 880090, prevent tables from extending beyond there borders on report index

@AdrianGaudebert @brandonsavage r?

1) Search for xul.dll@
2) Look for the following signature: [@ mozalloc_abort(char const* const) | xul.dll@0xc1340c | xul.dll@0x67a107 | xul.dll@0x4c7742 | xul.dll@0x16daa8 | xul.dll@0x11b2c0 | js::InvokeKernel(JSContext*, JS::CallArgs, js::MaybeConstruct) ] 

Head to report index.