[runtime] Fix a warning.

diff --git a/mono/eglib/gstr.c b/mono/eglib/gstr.c
index cd2fda3c2a115f0fe3a04526d31719d90e0e8e84..949ef88d39ffc5baff221917ba6a3c32e14801ce 100644 (file)
--- a/mono/eglib/gstr.c
+++ b/mono/eglib/gstr.c
@@ -263,7 +263,8 @@ g_strerror (gint errnum)
                if (buff != tmp_buff)
                        g_free (buff);
 #else /* USE_STRERROR_R_XSI */
-               buff = strerror_r (errnum, buff, buff_len);
+               int r;
+               r = strerror_r (errnum, buff, buff_len);
                if (!error_messages [errnum])
                        error_messages [errnum] = g_strdup (buff);
 #endif /* USE_STRERROR_R_XSI */