[tip:perf/core] perf tools: Fix a bug of segmentation fault

Commit-ID: 3a03005ff9445834f3d3b577a11bcbdbdf7a89cf Gitweb: http://git.kernel.org/tip/3a03005ff9445834f3d3b577a11bcbdbdf7a89cf Author: Yunlong Song AuthorDate: Fri, 13 Feb 2015 21:11:52 +0800 Committer: Arnaldo Carvalho de Melo CommitDate: Fri, 13 Feb 2015 11:38:43 -0300 perf tools:

[tip:perf/core] perf tools: Fix a bug of segmentation fault

Commit-ID: 3a03005ff9445834f3d3b577a11bcbdbdf7a89cf Gitweb: http://git.kernel.org/tip/3a03005ff9445834f3d3b577a11bcbdbdf7a89cf Author: Yunlong Song yunlong.s...@huawei.com AuthorDate: Fri, 13 Feb 2015 21:11:52 +0800 Committer: Arnaldo Carvalho de Melo a...@redhat.com CommitDate: Fri, 13