Fix build

[vvb2060]

curl/src/main/native/curl/lib/easy_lock.h:54:7: error: use of undeclared identifier 'asm'
        asm volatile("yield" ::: "memory");
        ^
  1 error generated.

when build with -std options

---

curl/src/main/native/curl/lib/vquic/ngtcp2.c:1081:3: error: incompatible function pointer types initializing 'nghttp3_acked_stream_data' (aka 'int (*)(struct nghttp3_conn *, long long, unsigned long long, void *, void *)') with an expression of type 'int (nghttp3_conn *, int64_t, size_t, void *, void *)' (aka 'int (struct nghttp3_conn *, long long, unsigned int, void *, void *)') [-Werror,-Wincompatible-function-pointer-types]
C/C++:   cb_h3_acked_stream_data, /* acked_stream_data */
C/C++:   ^~~~~~~~~~~~~~~~~~~~~~~
C/C++: 1 error generated.

when build with -Werror options on armeabi-v7a
ngtcp2/nghttp3@68fbf05

[bagder]

Thanks!