zfs_main.c: fix unused variable error with GCC

zfs_setproctitle_init() is stubbed out on FreeBSD. Reviewed-by: Ryan Moeller <ryan@iXsystems.com> Reviewed-by: Ameer Hamza <ahamza@ixsystems.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu> Signed-off-by: Rob Wing <rob.fx907@gmail.com> Closes openzfs#14441
tonyhutter · Apr 5, 2023 · 745169f · 745169f
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commit 745169f
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diff --git a/cmd/zfs/zfs_main.c b/cmd/zfs/zfs_main.c
@@ -8668,7 +8668,6 @@ main(int argc, char **argv)
 	int i = 0;
 	char *cmdname;
 	char **newargv;
-	extern char **environ;
 
 	(void) setlocale(LC_ALL, "");
 	(void) setlocale(LC_NUMERIC, "C");

diff --git a/include/libzutil.h b/include/libzutil.h
@@ -168,6 +168,7 @@ void color_end(void);
 int printf_color(const char *color, char *format, ...);
 
 #ifdef __linux__
+extern char **environ;
 _LIBZUTIL_H void zfs_setproctitle_init(int argc, char *argv[], char *envp[]);
 _LIBZUTIL_H void zfs_setproctitle(const char *fmt, ...);
 #else