rpm: respect BB_SYSTEMROOTHEADmaster

Update the 'rpm' applet so it also respects the BB_SYSTEMROOT
environment variable.

Replace chdir_system_drive() with xchdir_system_drive(), which
exits on failure to change directory.

Saves 32-36 bytes.

(GitHub PR #603)

Signed-off-by: Ron Yorston <rmy@pobox.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/include/mingw.h b/include/mingw.h
index c2a106139..52f4605cf 100644
--- a/include/mingw.h
+++ b/include/mingw.h
@@ -672,7 +672,7 @@ int enumerate_links(const char *file, char *name) FAST_FUNC;
 int unc_root_len(const char *dir) FAST_FUNC;
 int root_len(const char *path) FAST_FUNC;
 const char *get_system_drive(void) FAST_FUNC;
-int chdir_system_drive(void);
+void xchdir_system_drive(void);
 char *xabsolute_path(char *path) FAST_FUNC;
 char *get_drive_cwd(const char *path, char *buffer, int size) FAST_FUNC;
 void fix_path_case(char *path) FAST_FUNC;