Small refactor to fbr_vrb_init() error handling Fix potential memory leak on anonymous mmap() fail
Small refactor to fbr_vrb_init() error handling
Fix potential memory leak on anonymous mmap() fail

JohnPJenkins/libevfibers,Lupus/libevfibers,Lupus/libevfibers,Lupus/libevfibers,JohnPJenkins/libevfibers,JohnPJenkins/libevfibers