fix failing unittest
fix failing unittest

stupidcache/psutil,end18/psutil,skyshe/psutil,nmani1905/psutil,stupidcache/psutil,kiranvizru/psutil,vmolsa/psutil,google-code-export/psutil,djhaskin987/psutil,kiranvizru/psutil,chjwang/psutil,Alwnikrotikz/psutil,kiranvizru/psutil,shiva21/psutil,creativewild/psutil,peter-hst/psutil,djhaskin987/psutil,creativewild/psutil,zhengzheng/psutil,creativewild/psutil,google-code-export/psutil,google-code-export/psutil,chjwang/psutil,google-code-export/psutil,stupidcache/psutil,tigerneil/psutil,tigerneil/psutil,huson2012/psutil,end18/psutil,kiranvizru/psutil,djhaskin987/psutil,end18/psutil,PFZheng/psutil,AlanZatarain/psutil,tigerneil/psutil,Alwnikrotikz/psutil,vmolsa/psutil,vmolsa/psutil,skyshe/psutil,end18/psutil,huson2012/psutil,anfedorov/psutil,tigerneil/psutil,marmolu/psutil,huson2012/psutil,jucapj/psutil,djhaskin987/psutil,PFZheng/psutil,skyshe/psutil,shiva21/psutil,marmolu/psutil,anfedorov/psutil,nmani1905/psutil,AlanZatarain/psutil,zhengzheng/psutil,jucapj/psutil,peter-hst/psutil,skyshe/psutil,vmolsa/psutil