Fix a couple of bugs

src/bbs.c

@@ -1022,7 +1022,7 @@ tryagain:
 }
 
 void do_logout() {
-	char buffer[256];
+	char buffer[PATH_MAX];
 	struct stat s;
 	lua_State *L;
 	int ret = 0;

src/strings.c

@@ -10,7 +10,7 @@ char **strings;
 int string_count;
 
 void chomp(char *string) {
-	while ((string[strlen(string)-1] == '\r' || string[strlen(string)-1] == '\n') && strlen(string)) {
+	while (strlen(string) && (string[strlen(string)-1] == '\r' || string[strlen(string)-1] == '\n')) {
 		string[strlen(string)-1] = '\0';
 	}
 }