Exception thrown by memPoolsChart.js on resize. #48
Description
The memory pools chart (Heap Usage) throws exceptions to the JavaScript console when it is resized or goes from visible to invisible:
| i | @ | d3.v3.min.js:1
-- | -- | -- | --
| (anonymous) | @ | d3.v3.min.js:3
| Y | @ | d3.v3.min.js:1
| Co.each | @ | d3.v3.min.js:3
| Co.attr | @ | d3.v3.min.js:3
| resizeMemPoolsChart | @ | memPoolsChart.js:305
| resize | @ | (index):165
| (anonymous) | @ | httpThroughPutChart.js:180
| (anonymous) | @ | d3.v3.min.js:1
It throws four, one for each of the lines it's drawing and I only seem to be able to reproduce this on Chrome.