parsers: fix uninitialize variable warning
The heads pointer is not initialized correctly if filter is false, causing
both clang and gcc to issue a warning. Correctly initialize heads to NULL.
@echo off
rem Windows Driver script for Mercurial
setlocal
set HG=%~f0
rem Use a full path to Python (relative to this script) if it exists,
rem as the standard Python install does not put python.exe on the PATH...
rem Otherwise, expect that python.exe can be found on the PATH.
rem %~dp0 is the directory of this script
if exist "%~dp0..\python.exe" (
"%~dp0..\python" "%~dp0hg" %*
) else (
python "%~dp0hg" %*
)
endlocal