POSIX/src/common/module.c: do not use strerror_r the GNU way.

From the manpage:
       char *strerror(int errnum);

       int strerror_r(int errnum, char *buf, size_t buflen);
                   /* XSI-compliant */

       char *strerror_r(int errnum, char *buf, size_t buflen);
                   /* GNU-specific */

So changed the strerror_r() version to a version where we ignore the
the result of the function call

Signed-off-by: Willem Jan Withagen <[email protected]>

src/common/module.c

@@ -40,8 +40,9 @@ static int run_command(const char *command)
 
 	if (status < 0) {
 		char error_buf[80];
+		strerror_r(errno, error_buf, sizeof(error_buf));
 		fprintf(stderr, "couldn't run '%s': %s\n", command,
-			strerror_r(errno, error_buf, sizeof(error_buf)));
+			error_buf);
 	} else if (WIFSIGNALED(status)) {
 		fprintf(stderr, "'%s' killed by signal %d\n", command,
 			WTERMSIG(status));