Update msys2-build.yml

Author: SirLynix

.github/workflows/msys2-build.yml

@@ -57,12 +57,13 @@ jobs:
     - name: Install xmake dev
       shell: msys2 {0}
       run: |
-        git clone https://github.com/xmake-io/xmake.git --recurse-submodules -b dev
-        cd xmake
+        git clone https://github.com/xmake-io/xmake.git --recurse-submodules -b dev xmake-src
+        cd xmake-src
         ./configure
         make -j4
         make install PREFIX=/${{ matrix.msystem }}
         xmake --version
+        cd ..
 
     # Force xmake to a specific folder (for cache)
     - name: Set xmake env