link group libGL.so-master is broken

I was doing system upgrade and encounter the following warnings:

```sh
Processing triggers for glx-alternative-mesa (1.1.0) ...
update-alternatives: warning: forcing reinstallation of alternative /usr/lib/mesa-diverted because link group libGL.so-master is broken
update-alternatives: warning: skip creation of /usr/lib/x86_64-linux-gnu/libEGL.so because associated file /usr/lib/mesa-diverted/x86_64-linux-gnu/libEGL.so (of link group libGL.so-master) doesn't exist
update-alternatives: warning: skip creation of /usr/lib/x86_64-linux-gnu/libGLESv1_CM.so because associated file /usr/lib/mesa-diverted/x86_64-linux-gnu/libGLESv1_CM.so (of link group libGL.so-master) doesn't exist
update-alternatives: warning: skip creation of /usr/lib/x86_64-linux-gnu/libGLESv2.so because associated file /usr/lib/mesa-diverted/x86_64-linux-gnu/libGLESv2.so (of link group libGL.so-master) doesn't exist
```
Then i checked `/etc/alternatives/libGL.so-master` contents. Seems that `/etc/alternatives/libGL.so-master` is symlinked to itself. I'm no expert but it doesn't look correct. how can i resolve my issue?

```sh
$ tree /etc/alternatives/libGL.so-master
/etc/alternatives/libGL.so-master
├── arm-linux-gnueabihf
├── i386-linux-gnu
│ ├── libEGL.so.1 -> libEGL.so.1.1.0
│ ├── libEGL.so.1.1.0
│ ├── libGLESv1_CM.so.1 -> libGLESv1_CM.so.1.2.0
│ ├── libGLESv1_CM.so.1.2.0
│ ├── libGLESv2.so.2 -> libGLESv2.so.2.1.0
│ ├── libGLESv2.so.2.1.0
│ ├── libGL.so.1 -> libGL.so.1.7.0
│ ├── libGL.so.1.7.0
│ └── libGLX_indirect.so.0 -> libGLX_mesa.so.0
├── libGL.so-master -> /etc/alternatives/libGL.so-master
├── powerpc64le-linux-gnu
└── x86_64-linux-gnu
├── libEGL.so.1 -> libEGL.so.1.1.0
├── libEGL.so.1.1.0
├── libGLESv1_CM.so.1 -> libGLESv1_CM.so.1.2.0
├── libGLESv1_CM.so.1.2.0
├── libGLESv2.so.2 -> libGLESv2.so.2.1.0
├── libGLESv2.so.2.1.0
├── libGL.so -> libGL.so.1
├── libGL.so.1 -> libGL.so.1.7.0
├── libGL.so.1.7.0
└── libGLX_indirect.so.0 -> libGLX_mesa.so.0

5 directories, 19 files
```

```sh
$ uname -srv
Linux 5.3.0-kali3-amd64 #1 SMP Debian 5.3.15-1kali1 (2019-12-09)
```