Fix build failure.
Fix build failure.

andrewsomething/libcloud,andrewsomething/libcloud,apache/libcloud,Kami/libcloud,mistio/libcloud,vongazman/libcloud,pquentin/libcloud,apache/libcloud,vongazman/libcloud,mistio/libcloud,StackPointCloud/libcloud,vongazman/libcloud,ByteInternet/libcloud,Scalr/libcloud,pquentin/libcloud,StackPointCloud/libcloud,andrewsomething/libcloud,Kami/libcloud,Scalr/libcloud,Kami/libcloud,Scalr/libcloud,StackPointCloud/libcloud,ByteInternet/libcloud,ByteInternet/libcloud,apache/libcloud,mistio/libcloud,pquentin/libcloud