[wrt][XWALK-2652]Fix get uninstall info bug

[Detailed commit message (if have)]
Impacted TCs num(approved): New 0, update 1, deleted 0
Unit test platform: [tizen]
Test Result: Pass 1, Fail 0
Merge pull request #1106 from linshen/shenlin/fix-xwalk2279-1031

[wrt][XWALK-2652]Fix get uninstall info bug