windows: suppress UI in all CryptAcquireContext() calls

Ref: https://docs.microsoft.com/windows/win32/api/wincrypt/nf-wincrypt-cryptacquirecontexta#parameters
Reviewed-by: Marc Hörsken
Closes https://github.com/curl/curl/pull/5088

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/md4.c b/lib/md4.c
index 38f1b2bc9..4dab6af7a 100644
--- a/lib/md4.c
+++ b/lib/md4.c
@@ -146,7 +146,7 @@ static void MD4_Init(MD4_CTX *ctx)
   ctx->hHash = 0;
 
   if(CryptAcquireContext(&ctx->hCryptProv, NULL, NULL, PROV_RSA_FULL,
-                         CRYPT_VERIFYCONTEXT)) {
+                         CRYPT_VERIFYCONTEXT | CRYPT_SILENT)) {
     CryptCreateHash(ctx->hCryptProv, CALG_MD4, 0, 0, &ctx->hHash);
   }
 }