vm.c: fix infinite loop

	* vm.c: use EXEC_EVENT_HOOK_AND_POP_FRAME. While exception handling, if an exception
	  is raised in hooks, need to pop current frame and raise this raised exception by hook.

	[ruby-dev:50582] [Bug #14865]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_4@64129 b2dd03c8-39d4-4d8f-98ff-823fe69b080e