mingw32: fix off-by-one errors in spawn routines

There are two changes here.  The first, in mingw_spawn_1, removes
a post-increment of argv which should have no effect.  The second,
in mingw_spawn, should fix a reported problem with xargs:

   https://github.com/pclouds/busybox-w32/issues/19

Basically, 'find . -type f | xargs md5sum' was failing to process the
first file.

1 files changed, 2 insertions, 2 deletions

diff --git a/win32/process.c b/win32/process.c
index 0db1a455a..53ad44a42 100644
--- a/win32/process.c
+++ b/win32/process.c
@@ -261,7 +261,7 @@ mingw_spawn_1(int mode, const char *cmd, const char *const *argv, const char *co
 
         if (ENABLE_FEATURE_PREFER_APPLETS &&
             find_applet_by_name(cmd) >= 0)
-                return mingw_spawn_applet(mode, cmd, argv++, envp);
+                return mingw_spawn_applet(mode, cmd, argv, envp);
         else if (is_absolute_path(cmd))
                 return mingw_spawn_interpreter(mode, cmd, argv, envp);
         else {
@@ -290,7 +290,7 @@ mingw_spawn_1(int mode, const char *cmd, const char *const *argv, const char *co
 pid_t
 mingw_spawn(char **argv)
 {
-        return mingw_spawn_1(P_NOWAIT, argv[0], (const char *const *)(argv+1), (const char *const *)environ);
+        return mingw_spawn_1(P_NOWAIT, argv[0], (const char *const *)argv, (const char *const *)environ);
 }
 
 int