qmmp: 1.1.10 -> 1.2.0

Fixes build failure since recent merge of staging branch:

$ nix-build -A qmmp
[...]
AutoMoc error
-------------
Included moc files with the same name will be generated from different sources.
Consider to
- not include the "moc_<NAME>.cpp" file
- add a directory prefix to a "<NAME>.moc" include (e.g "sub/<NAME>.moc")
- rename the source file(s)
Include conflicts
-----------------
"moc_hotkeymanager.cpp" included in
- "/tmp/nix-build-qmmp-1.1.10.drv-0/qmmp-1.1.10/src/plugins/General/hotkey/hotkeymanager_win.cpp"
- "/tmp/nix-build-qmmp-1.1.10.drv-0/qmmp-1.1.10/src/plugins/General/hotkey/hotkeymanager_x11.cpp"
would be generated from
- "/tmp/nix-build-qmmp-1.1.10.drv-0/qmmp-1.1.10/src/plugins/General/hotkey/hotkeymanager.h"
- "/tmp/nix-build-qmmp-1.1.10.drv-0/qmmp-1.1.10/src/plugins/General/hotkey/hotkeymanager.h"

make[2]: *** [src/plugins/General/hotkey/CMakeFiles/hotkey_autogen.dir/build.make:58: src/plugins/General/hotkey/CMakeFiles/hotkey_autogen] Error 1

pkgs/applications/audio/qmmp/default.nix

···
 # handle that.
 
 stdenv.mkDerivation rec {
-  name = "qmmp-1.1.10";
+  name = "qmmp-1.2.0";
 
   src = fetchurl {
     url = "http://qmmp.ylsoftware.com/files/${name}.tar.bz2";
-    sha256 = "16hb3s48filq0q18m7x9vmhpirk4fh0aqj8kwbapv8mkcnzq2mqy";
+    sha256 = "17kci7srgbkk62dgxlmg3lv2y7z04jsinpgx6jmxjpnpblpcj840";
   };
 
   buildInputs =