Fix compiler warnings

Author: dacav

fuzz/fuzz_auth.c

@@ -164,6 +164,8 @@ static void consume(const void *body, size_t len) {
 
   while (len--)
     x ^= *ptr++;
+
+  (void) x;
 }
 
 static int conv_cb(int num_msg, const struct pam_message **msg,

fuzz/wrap.c

@@ -92,9 +92,12 @@ extern int __wrap_asprintf(char **strp, const char *fmt, ...) {
     return -1;
   }
 
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wformat-nonliteral"
   va_start(ap, fmt);
   r = vasprintf(strp, fmt, ap);
   va_end(ap);
+#pragma clang diagnostic pop
 
   return r;
 }