#zpravy-245 Fix error which sometimes occurred in the logs - it was caused because in older Firefoxes (versions lower than 44) there is no possibility to iterate through all the headers ... + added if branch with Headers().get() because Headers.getAll() is deprecated/obsolete and could be removed in newer browsers where is replaced by Headers.get()
#zpravy-245 Fix error which sometimes occurred in the logs - it was caused because in older Firefoxes (versions lower than 44) there is no possibility to iterate through all the headers ... + added if branch with Headers().get() because Headers.getAll() is deprecated/obsolete and could be removed in newer browsers where is replaced by Headers.get()

seznam/IMA.js-core,seznam/IMA.js-core