Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 4e944d4149bfcf7196691c57f3ae6659ffd05960
  - Merge "Added null check for execute() result to remove static analyzer warning"
  - Added null check for execute() result to remove
    static analyzer warning
    
    Issue-ID: SO-1841
    Signed-off-by: Oleksandr Moliavko <o.moliavko@samsung.com>
    Change-Id: Ifc8481b659c5b53378611f9e80db087db590ae05
    
1 file changed