check /proc only if using /proc

htop.c

@@ -656,11 +656,12 @@ int main(int argc, char** argv) {
       }
    }
 
-
+#ifdef HAVE_PROC
    if (access(PROCDIR, R_OK) != 0) {
       fprintf(stderr, "Error: could not read procfs (compiled to look in %s).\n", PROCDIR);
       exit(1);
    }
+#endif
    
 #ifdef HAVE_LIBNCURSESW
    char *locale = setlocale(LC_ALL, NULL);