maint: let gnulib provide environ

* bootstrap.conf (gnulib_modules): Add environ.
* src/env.c (environ): Delete declaration.
* src/printenv.c (environ): Likewise.
* src/stdbuf.c (environ): Likewise.
* src/su.c (environ): Likewise.

1 files changed, 0 insertions, 2 deletions

diff --git a/src/su.c b/src/su.c
index 0de67c95a..add100aeb 100644
--- a/src/su.c
+++ b/src/su.c
@@ -113,8 +113,6 @@
 
 char *crypt (char const *key, char const *salt);
 
-extern char **environ;
-
 static void run_shell (char const *, char const *, char **, size_t)
      ATTRIBUTE_NORETURN;