firefox: multiple issues

CVE-2015-4513 Miscellaneous memory safety hazards: Christian Holler, David Major, Jesse Ruderman, Tyson Smith, Boris Zbarsky, Randell Jesup, Olli Pettay, Karl Tomlinson, Jeff Walden, and Gary Kwong reported memory safety problems and crashes that affect Firefox ESR 38.3 and Firefox 41. -...