win32: close exec'ing process if possible

If a process performing an exec is an orphan there's no reason for
it to wait for its child's exit code.  Let it exit immediately.

Adds 16 bytes.

(GitHub issue #461)

1 files changed, 3 insertions, 0 deletions

diff --git a/win32/process.c b/win32/process.c
index 30739c96d..a70b9484e 100644
--- a/win32/process.c
+++ b/win32/process.c
@@ -487,6 +487,9 @@ static NORETURN void wait_for_child(HANDLE child, const char *cmd)
         DWORD code;
         int status;
 
+        if (getppid() == 1)
+                exit(0);
+
         kill_child_ctrl_handler(GetProcessId(child));
         SetConsoleCtrlHandler(kill_child_ctrl_handler, TRUE);
         WaitForSingleObject(child, INFINITE);