Provide a prototype for unsetenv on MS-Windows.

 nt/inc/unistd.h (unsetenv): Provide a prototype.

2 files changed, 7 insertions, 0 deletions

diff --git a/nt/ChangeLog b/nt/ChangeLog
index 8cb9594d4d0..35fcefe5b1b 100644
--- a/nt/ChangeLog
+++ b/nt/ChangeLog
@@ -1,3 +1,7 @@
+2012-12-09  Eli Zaretskii  <eliz@gnu.org>
+
+        * inc/unistd.h (unsetenv): Provide a prototype.
+
 2012-12-08  Eli Zaretskii  <eliz@gnu.org>
 
         * inc/ms-w32.h (putenv): Redirect to sys_putenv.
diff --git a/nt/inc/unistd.h b/nt/inc/unistd.h
index e751ed124d3..5fdd9c8eb88 100644
--- a/nt/inc/unistd.h
+++ b/nt/inc/unistd.h
@@ -28,4 +28,7 @@ extern int faccessat (int, char const *, int, int);
 
 #define O_NOCTTY 0
 
+/* This is normally on stdlib.h, but we don't override that header.  */
+extern int unsetenv (const char *);
+
 #endif  /* _UNISTD_H */