Passing **envp around in git.c

["Stephen Cuppett" <cuppett@gmail.com>]

Is there a reason for passing char** envp around in git.c or is it a
vestige of something older?  It's sent into handle_internal_command
from main; however, it's never used.  Looks like it might have been
used before, but then replaced with getenv.  The code probably gets
optimized out at compile time, but to clean up:

diff --git a/git.c b/git.c
index 29b55a1..614baed 100644
--- a/git.c
+++ b/git.c
@@ -216,7 +216,7 @@ const char git_version_string[] = GIT_VERSION;
  */
 #define NOT_BARE       (1<<2)

-static void handle_internal_command(int argc, const char **argv, char **envp)
+static void handle_internal_command(int argc, const char **argv)
 {
        const char *cmd = argv[0];
        static struct cmd_struct {
@@ -358,7 +358,7 @@ int main(int argc, const char **argv, char **envp)
        if (!prefixcmp(cmd, "git-")) {
                cmd += 4;
                argv[0] = cmd;
-               handle_internal_command(argc, argv, envp);
+               handle_internal_command(argc, argv);
                die("cannot handle %s internally", cmd);
        }

@@ -390,7 +390,7 @@ int main(int argc, const char **argv, char **envp)

        while (1) {
                /* See if it's an internal command */
-               handle_internal_command(argc, argv, envp);
+               handle_internal_command(argc, argv);

                /* .. then try the external ones */
                execv_git_cmd(argv);