[math] Document NPE. JIRA: MATH-1224.

Repository: commons-math Updated Branches: refs/heads/master 903f28059 -> 83c61da2c Document NPE. JIRA: MATH-1224. Project: http://git-wip-us.apache.org/repos/asf/commons-math/repo Commit: http://git-wip-us.apache.org/repos/asf/commons-math/commit/83c61da2 Tree: http://git-wip-us.apache.org/

[2/2] [math] Document NPE. JIRA: MATH-1224.

Document NPE. JIRA: MATH-1224. Project: http://git-wip-us.apache.org/repos/asf/commons-math/repo Commit: http://git-wip-us.apache.org/repos/asf/commons-math/commit/fbf6259e Tree: http://git-wip-us.apache.org/repos/asf/commons-math/tree/fbf6259e Diff: http://git-wip-us.apache.org/repos/asf/common