Hangs the current tab in Safari Version 9.0.3 (11601.4.4) OS X 10.11.3 (15D21).<p><pre><code>  Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
  0   com.apple.ImageIO.framework   	0x00007fff8944c43c read_user_chunk_callback + 118
  1   libPng.dylib                  	0x00007fff85645451 png_handle_unknown + 67
  2   libPng.dylib                  	0x00007fff8563b5cf _cg_png_read_info + 234
  3   com.apple.ImageIO.framework   	0x00007fff89411de6 initImagePng + 1642
  4   com.apple.ImageIO.framework   	0x00007fff894091e0 makeImagePlus + 1375
  5   com.apple.ImageIO.framework   	0x00007fff894084ce _CGImageSourceGetPropertiesAtIndexInternal + 56
  6   com.apple.ImageIO.framework   	0x00007fff89408447 CGImageSourceCopyPropertiesAtIndex + 147
  7   com.apple.WebCore             	0x00007fff85686b0e WebCore::ImageSource::isSizeAvailable() + 62</code></pre>