Fixed stlsplit udif branch name

Author: udif

.github/workflows/windows-x64.yml

@@ -37,7 +37,7 @@ jobs:
         export PKG_CONFIG_PATH_x86_64_w64_mingw32_static=/usr/mxe-x86-64-w64-mingw32.static/lib/pkgconfig &&
         export PATH=/usr/lib/mxe/usr/bin:$PATH &&
         git clone https://github.com/udif/stlsplit &&
-        cd stlsplit && git checkout pr_autoconf &&
+        cd stlsplit && git checkout pr_staticlib &&
         premake4 gmake config=release64 &&
         export CXX=/usr/lib/mxe/usr/bin/x86_64-w64-mingw32.static-g++ &&
         make -f static-lib.make INCLUDES="-I/usr/mxe-x86-64-w64-mingw32.static/include $(x86_64-w64-mingw32.static-pkg-config libadmesh --cflags)" LIBS="$(x86_64-w64-mingw32.static-pkg-config libadmesh --libs) -ladmesh" &&