openssh-5.4p1/misc.c

154 /* Characters considered whitespace in strsep calls. */
155 #define WHITESPACE " \t\r\n"
156 #define QUOTE   "\""
157 
158 /* return next token in configuration line */
159 char *
160 strdelim(char **s)
161 {
...
179         } else {
180             *s[0] = '\0';
181             return (old);
182         }
...


It should be:

        } else {
            *s[0] = '\0';
            *s += strspn(*s + 1, WHITESPACE) + 1;
            return (old);
        }