Updated git submodules

Project: music master 99c6296cf2faeea3d7b04d6cc696367729cef88a

Merge "Added fix for potential nullpointer exception"

Added fix for potential nullpointer exception

Added fix for potential nullpointerexception reported in sonarqube

Issue-ID: MUSIC-114
Change-Id: I6792a357534880fb85d353e2832b16aca2415c8b
Signed-off-by: Chandan Ghosh <cghosh12@in.ibm.com>

diff --git a/docs/submodules/music.git b/docs/submodules/music.git
index 73a0e01..99c6296 160000 (submodule)
--- a/docs/submodules/music.git
+++ b/docs/submodules/music.git
@@ -1 +1 @@
-Subproject commit 73a0e01a5983a1ee3c1fac0935be89a7a5a83e87
+Subproject commit 99c6296cf2faeea3d7b04d6cc696367729cef88a