scratch/posix-spawn-no-gnulib 680052b: Fix compilation on MS-Windows

[Eli Zaretskii]

branch: scratch/posix-spawn-no-gnulib
commit 680052b3bcd380f862f6d4cbb6985763c55bb477
Author: Eli Zaretskii <eliz@gnu.org>
Commit: Eli Zaretskii <eliz@gnu.org>

    Fix compilation on MS-Windows
    
    * src/callproc.c (emacs_spawn) <fork_done>: Define the label only
    if USABLE_POSIX_SPAWN is defined, to avoid a compiler warning.
---
 src/callproc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/callproc.c b/src/callproc.c
index cb270d4..1b11f2d 100644
--- a/src/callproc.c
+++ b/src/callproc.c
@@ -1563,7 +1563,9 @@ emacs_spawn (pid_t *newpid, int std_in, int std_out, int 
std_err,
 
   vfork_error = pid < 0 ? errno : 0;
 
+#if USABLE_POSIX_SPAWN
  fork_done:
+#endif
   /* Stop blocking in the parent.  */
   unblock_child_signal (&oldset);
   unblock_input ();