build: CryptGenRandom --> wincrypt, it is a better name

configure

@@ -1611,7 +1611,6 @@ SYSTEM_FUNCS="
     clock_gettime
     closesocket
     CommandLineToArgvW
-    CryptGenRandom
     fcntl
     getaddrinfo
     gethrtime
@@ -1706,6 +1705,7 @@ HAVE_LIST="
     vaapi_drm
     vaapi_x11
     vdpau_x11
+    wincrypt
 "
 
 # options emitted with CONFIG_ prefix but not available on the command line

libavutil/random_seed.c

@@ -23,7 +23,7 @@
 #if HAVE_UNISTD_H
 #include <unistd.h>
 #endif
-#if HAVE_CRYPTGENRANDOM
+#if HAVE_WINCRYPT
 #include <windows.h>
 #include <wincrypt.h>
 #endif
@@ -96,7 +96,7 @@ uint32_t av_get_random_seed(void)
 {
     uint32_t seed;
 
-#if HAVE_CRYPTGENRANDOM
+#if HAVE_WINCRYPT
     HCRYPTPROV provider;
     if (CryptAcquireContext(&provider, NULL, NULL, PROV_RSA_FULL,
                             CRYPT_VERIFYCONTEXT | CRYPT_SILENT)) {